diff --git a/frontend/src/components/account/AppProfileAuth.vue b/frontend/src/components/account/AppProfileAuth.vue
index 3cac30a..fe7e387 100644
--- a/frontend/src/components/account/AppProfileAuth.vue
+++ b/frontend/src/components/account/AppProfileAuth.vue
@@ -32,17 +32,27 @@ const props = withDefaults(
     maxUsernameLength?: number
     minUsernameLength?: number
     mode: 'login' | 'register'
+    password?: string
+    passwordLabel?: string
+    passwordPlaceholder?: string
     pending: boolean
     registerLabel: string
+    requirePassword?: boolean
     title: string
     username: string
     usernameLabel: string
     usernamePlaceholder?: string
+    variant?: 'default' | 'centered'
   }>(),
   {
     maxUsernameLength: 40,
     minUsernameLength: 2,
+    password: '',
+    passwordLabel: 'Password',
+    passwordPlaceholder: '',
+    requirePassword: false,
     usernamePlaceholder: '',
+    variant: 'default',
   },
 )
 const emit = defineEmits<{
@@ -50,21 +60,30 @@ const emit = defineEmits<{
   gallery: []
   submit: []
   'update:mode': [value: 'login' | 'register']
+  'update:password': [value: string]
   'update:username': [value: string]
 }>()
 
 const canSubmit = computed(() => {
   const length = props.username.trim().length
+  const validUsername =
+    length >= props.minUsernameLength && length <= props.maxUsernameLength
   return Boolean(
     props.email &&
-      length >= props.minUsernameLength &&
-      length <= props.maxUsernameLength,
+      (props.mode === 'login' && props.requirePassword
+        ? true
+        : validUsername) &&
+      (!props.requirePassword ||
+        (props.password.length >= 8 && props.password.length <= 72)),
   )
 })
 </script>
 
 <template>
-  <section class="app-profile-auth">
+  <section
+    class="app-profile-auth"
+    :class="{ 'app-profile-auth--centered': variant === 'centered' }"
+  >
     <header class="app-profile-auth__hero">
       <span class="app-profile-auth__mark"><UserRound :size="23" /></span>
       <div>
@@ -75,7 +94,39 @@ const canSubmit = computed(() => {
     </header>
 
     <k-glass class="app-profile-auth__card">
-      <k-segmented raised class="app-profile-auth__mode">
+      <div
+        v-if="variant === 'centered'"
+        class="app-profile-auth__mode app-profile-auth__mode--centered"
+        role="tablist"
+        :aria-label="`${loginLabel} / ${registerLabel}`"
+      >
+        <button
+          type="button"
+          class="app-profile-auth__mode-choice"
+          :class="{
+            'app-profile-auth__mode-choice--active': mode === 'login',
+          }"
+          role="tab"
+          :aria-selected="mode === 'login'"
+          @click="emit('update:mode', 'login')"
+        >
+          {{ loginLabel }}
+        </button>
+        <button
+          type="button"
+          class="app-profile-auth__mode-choice"
+          :class="{
+            'app-profile-auth__mode-choice--active': mode === 'register',
+          }"
+          role="tab"
+          :aria-selected="mode === 'register'"
+          @click="emit('update:mode', 'register')"
+        >
+          {{ registerLabel }}
+        </button>
+      </div>
+
+      <k-segmented v-else raised class="app-profile-auth__mode">
         <k-segmented-button
           class="app-profile-auth__mode-button app-profile-auth__mode-button--login"
           :class="{
@@ -123,7 +174,64 @@ const canSubmit = computed(() => {
         <LockKeyhole :size="15" />
       </div>
 
-      <k-list inset strong class="app-profile-auth__fields">
+      <label
+        v-if="
+          variant === 'centered' && (mode === 'register' || !requirePassword)
+        "
+        class="app-profile-auth__username-field"
+        for="app-profile-auth-username"
+      >
+        <span><UserRound :size="17" /></span>
+        <div>
+          <small>{{ usernameLabel }}</small>
+          <input
+            id="app-profile-auth-username"
+            :value="username"
+            :maxlength="maxUsernameLength"
+            :placeholder="usernamePlaceholder"
+            autocomplete="username"
+            autocapitalize="none"
+            autocorrect="off"
+            spellcheck="false"
+            @input="
+              emit('update:username', ($event.target as HTMLInputElement).value)
+            "
+            @keydown.enter="emit('submit')"
+          />
+        </div>
+      </label>
+
+      <label
+        v-if="variant === 'centered' && requirePassword"
+        class="app-profile-auth__password-field"
+        for="app-profile-auth-password"
+      >
+        <span><LockKeyhole :size="17" /></span>
+        <div>
+          <small>{{ passwordLabel }}</small>
+          <input
+            id="app-profile-auth-password"
+            :value="password"
+            maxlength="72"
+            :placeholder="passwordPlaceholder"
+            :autocomplete="
+              mode === 'login' ? 'current-password' : 'new-password'
+            "
+            type="password"
+            @input="
+              emit('update:password', ($event.target as HTMLInputElement).value)
+            "
+            @keydown.enter="emit('submit')"
+          />
+        </div>
+      </label>
+
+      <k-list
+        v-else-if="variant !== 'centered'"
+        inset
+        strong
+        class="app-profile-auth__fields"
+      >
         <k-list-input
           input-id="app-profile-auth-username"
           :label="usernameLabel"
@@ -380,6 +488,102 @@ const canSubmit = computed(() => {
 .app-profile-auth__identity > svg {
   color: var(--muted, #9ba4aa);
 }
+.app-profile-auth__username-field {
+  display: grid;
+  grid-template-columns: 34px minmax(0, 1fr);
+  align-items: center;
+  gap: 9px;
+  margin-bottom: 11px;
+  padding: 9px 11px;
+  border: 1px solid rgba(255, 255, 255, 0.09);
+  border-radius: 15px;
+  background: rgba(255, 255, 255, 0.045);
+  text-align: left;
+}
+.app-profile-auth__password-field {
+  display: grid;
+  grid-template-columns: 34px minmax(0, 1fr);
+  align-items: center;
+  gap: 9px;
+  margin-bottom: 11px;
+  padding: 9px 11px;
+  border: 1px solid rgba(255, 255, 255, 0.09);
+  border-radius: 15px;
+  background: rgba(255, 255, 255, 0.045);
+  text-align: left;
+}
+.app-profile-auth__password-field > span {
+  display: grid;
+  width: 34px;
+  height: 34px;
+  place-items: center;
+  border-radius: 11px;
+  color: var(--auth-accent, #ffd63e);
+  background: color-mix(in srgb, var(--auth-accent, #ffd63e) 13%, transparent);
+}
+.app-profile-auth__password-field div {
+  min-width: 0;
+}
+.app-profile-auth__password-field small {
+  display: block;
+  margin-bottom: 1px;
+  color: var(--muted, #9ba4aa);
+  font-size: 9px;
+}
+.app-profile-auth__password-field input {
+  box-sizing: border-box;
+  width: 100%;
+  min-width: 0;
+  padding: 0;
+  border: 0;
+  outline: 0;
+  color: inherit;
+  background: transparent;
+  font: inherit;
+  font-size: 12px;
+  font-weight: 700;
+  line-height: 18px;
+}
+.app-profile-auth__password-field input::placeholder {
+  color: var(--muted, #9ba4aa);
+  opacity: 0.72;
+}
+.app-profile-auth__username-field > span {
+  display: grid;
+  width: 34px;
+  height: 34px;
+  place-items: center;
+  border-radius: 11px;
+  color: var(--auth-accent, #ffd63e);
+  background: color-mix(in srgb, var(--auth-accent, #ffd63e) 13%, transparent);
+}
+.app-profile-auth__username-field div {
+  min-width: 0;
+}
+.app-profile-auth__username-field small {
+  display: block;
+  margin-bottom: 1px;
+  color: var(--muted, #9ba4aa);
+  font-size: 9px;
+}
+.app-profile-auth__username-field input {
+  box-sizing: border-box;
+  width: 100%;
+  min-width: 0;
+  padding: 0;
+  border: 0;
+  outline: 0;
+  color: inherit;
+  background: transparent;
+  font: inherit;
+  font-size: 12px;
+  font-weight: 700;
+  line-height: 18px;
+}
+.app-profile-auth__username-field input::placeholder {
+  color: var(--muted, #9ba4aa);
+  opacity: 0.72;
+}
 .app-profile-auth__fields {
   margin-top: 0;
   margin-right: 0;
@@ -427,4 +631,110 @@ const canSubmit = computed(() => {
 .app-profile-auth__submit:disabled {
   opacity: 0.46;
 }
+.app-profile-auth--centered {
+  max-width: 340px;
+  padding: 0;
+}
+.app-profile-auth--centered .app-profile-auth__hero {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 7px;
+  margin: 0 18px 18px;
+  text-align: center;
+}
+.app-profile-auth--centered .app-profile-auth__mark {
+  width: 54px;
+  height: 54px;
+  margin-bottom: 3px;
+  border-radius: 18px;
+}
+.app-profile-auth--centered .app-profile-auth__hero h2 {
+  margin: 0;
+  font-size: 24px;
+}
+.app-profile-auth--centered .app-profile-auth__hero p {
+  max-width: 285px;
+  margin: 0;
+  font-size: 12px;
+  line-height: 1.45;
+}
+.app-profile-auth--centered .app-profile-auth__card {
+  box-sizing: border-box;
+  width: 100%;
+  margin-inline: auto;
+  padding: 14px;
+  border-radius: 28px;
+}
+.app-profile-auth--centered .app-profile-auth__mode {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 4px;
+  padding: 4px;
+  border-radius: 15px;
+}
+.app-profile-auth__mode-choice {
+  min-width: 0;
+  min-height: 40px;
+  padding: 0 12px;
+  border: 0;
+  border-radius: 11px;
+  display: grid;
+  place-items: center;
+  color: #b8c5ce;
+  background: transparent;
+  font: inherit;
+  font-size: 14px;
+  font-weight: 650;
+  line-height: 1;
+  cursor: pointer;
+  transition:
+    color 160ms ease,
+    background 160ms ease,
+    box-shadow 160ms ease;
+}
+.app-profile-auth__mode-choice--active {
+  color: #fff;
+  background: var(--auth-accent, #ffd63e);
+  box-shadow: 0 6px 16px
+    color-mix(in srgb, var(--auth-accent, #ffd63e) 28%, transparent);
+  font-weight: 750;
+}
+.app-profile-auth--centered .app-profile-auth__identity,
+.app-profile-auth--centered .app-profile-auth__username-field,
+.app-profile-auth--centered .app-profile-auth__password-field {
+  grid-template-columns: 38px minmax(0, 1fr) 18px;
+  min-height: 58px;
+  margin-bottom: 10px;
+  padding: 8px 12px;
+  border-radius: 17px;
+}
+.app-profile-auth--centered .app-profile-auth__username-field {
+  grid-template-columns: 38px minmax(0, 1fr);
+}
+.app-profile-auth--centered .app-profile-auth__password-field {
+  grid-template-columns: 38px minmax(0, 1fr);
+}
+.app-profile-auth--centered .app-profile-auth__identity > span,
+.app-profile-auth--centered .app-profile-auth__username-field > span,
+.app-profile-auth--centered .app-profile-auth__password-field > span {
+  width: 38px;
+  height: 38px;
+  border-radius: 12px;
+}
+.app-profile-auth--centered .app-profile-auth__identity small,
+.app-profile-auth--centered .app-profile-auth__username-field small,
+.app-profile-auth--centered .app-profile-auth__password-field small {
+  font-size: 10px;
+}
+.app-profile-auth--centered .app-profile-auth__identity strong,
+.app-profile-auth--centered .app-profile-auth__username-field input,
+.app-profile-auth--centered .app-profile-auth__password-field input {
+  font-size: 14px;
+  line-height: 20px;
+}
+.app-profile-auth--centered .app-profile-auth__submit {
+  min-height: 48px;
+  border-radius: 16px;
+}
 </style>
diff --git a/frontend/src/stores/crewlink.test.ts b/frontend/src/stores/crewlink.test.ts
index 64901c6..1bc7bf3 100644
--- a/frontend/src/stores/crewlink.test.ts
+++ b/frontend/src/stores/crewlink.test.ts
@@ -58,6 +58,29 @@ describe('CrewLink store', () => {
     expect(store.error).toBe('invalid_code')
   })
 
+  it('sends only the password when logging in', async () => {
+    vi.mocked(nuiCall).mockResolvedValue({
+      success: false,
+      error: 'invalid_credentials',
+    })
+    const store = useCrewLinkStore()
+    await store.login('CrewLink123!')
+    expect(nuiCall).toHaveBeenCalledWith('crewlink:login', {
+      password: 'CrewLink123!',
+    })
+  })
+
+  it('sends username, password, and avatar when registering', async () => {
+    vi.mocked(nuiCall).mockResolvedValue({ success: true })
+    const store = useCrewLinkStore()
+    await store.register('Skyline', 'CrewLink123!', 42)
+    expect(nuiCall).toHaveBeenCalledWith('crewlink:register', {
+      avatarMediaId: 42,
+      password: 'CrewLink123!',
+      username: 'Skyline',
+    })
+  })
+
   it('applies live members without replacing group metadata', async () => {
     const store = useCrewLinkStore()
     store.activeGroup = {
diff --git a/frontend/src/stores/crewlink.ts b/frontend/src/stores/crewlink.ts
index 637a621..dcd06d0 100644
--- a/frontend/src/stores/crewlink.ts
+++ b/frontend/src/stores/crewlink.ts
@@ -15,6 +15,7 @@ import { nuiCall, type NuiResponse } from '@/utils/nui'
 export const useCrewLinkStore = defineStore('crewlink', {
   state: () => ({
     activeGroup: null as CrewLinkGroup | null,
+    authenticated: false,
     error: '',
     groups: [] as CrewLinkBootstrap['groups'],
     invitations: [] as CrewLinkBootstrap['invitations'],
@@ -24,6 +25,7 @@ export const useCrewLinkStore = defineStore('crewlink', {
   }),
   actions: {
     applyBootstrap(data: CrewLinkBootstrap): void {
+      this.authenticated = data.authenticated ?? Boolean(data.profile)
       this.profile = data.profile
       this.groups = data.groups ?? []
       this.activeGroup = data.activeGroup ?? null
@@ -62,15 +64,28 @@ export const useCrewLinkStore = defineStore('crewlink', {
       }
       return response
     },
-    createProfile(
+    login(password: string): Promise<NuiResponse<CrewLinkBootstrap>> {
+      return this.request('crewlink:login', { password })
+    },
+    register(
       username: string,
+      password: string,
       avatarMediaId = 0,
     ): Promise<NuiResponse<CrewLinkBootstrap>> {
-      return this.request('crewlink:create-profile', {
+      return this.request('crewlink:register', {
         avatarMediaId,
+        password,
         username,
       })
     },
+    logout(): Promise<NuiResponse> {
+      this.authenticated = false
+      this.profile = null
+      this.groups = []
+      this.activeGroup = null
+      this.invitations = []
+      return nuiCall('crewlink:logout')
+    },
     updateProfile(
       username: string,
       mapVisible: boolean,
diff --git a/frontend/src/stores/phone.ts b/frontend/src/stores/phone.ts
index 85bd05a..51c4c03 100644
--- a/frontend/src/stores/phone.ts
+++ b/frontend/src/stores/phone.ts
@@ -641,10 +641,12 @@ const defaultLocales: LocaleTree = {
       authEyebrow: 'Private crew network',
       authTitle: 'Welcome to CrewLink',
       authBody:
-        'Your iFruit email is linked automatically. Use your CrewLink username to continue.',
+        'Your iFruit email is linked automatically. Enter your password to continue.',
       login: 'Log in',
       register: 'Register',
       ifruitEmail: 'iFruit address',
+      password: 'Password',
+      passwordPlaceholder: '8–72 characters',
       gallery: 'Photos',
       camera: 'Camera',
       backToLogin: 'Back to CrewLink login',
@@ -652,6 +654,8 @@ const defaultLocales: LocaleTree = {
         no_ifruit_account:
           'Sign in to your Sky Cloud account in Settings first.',
         invalid_username: 'Use 3–20 letters, numbers, dots, or underscores.',
+        invalid_password: 'Password must be 8–72 characters.',
+        invalid_credentials: 'The password for this iFruit email is incorrect.',
         profile_not_found: 'No CrewLink profile exists for this iFruit email.',
         profile_exists: 'This iFruit email already has a CrewLink profile.',
         username_taken: 'That CrewLink username is already taken.',
diff --git a/frontend/src/types/crewlink.ts b/frontend/src/types/crewlink.ts
index f27f0f5..1fa691a 100644
--- a/frontend/src/types/crewlink.ts
+++ b/frontend/src/types/crewlink.ts
@@ -88,6 +88,7 @@ export type CrewLinkLimits = {
 
 export type CrewLinkBootstrap = {
   activeGroup?: CrewLinkGroup | null
+  authenticated?: boolean
   groups: CrewLinkGroupSummary[]
   invitations: CrewLinkInvitation[]
   limits?: CrewLinkLimits
diff --git a/frontend/src/views/apps/CrewLinkApp.vue b/frontend/src/views/apps/CrewLinkApp.vue
index f058b7e..1c8e43f 100644
--- a/frontend/src/views/apps/CrewLinkApp.vue
+++ b/frontend/src/views/apps/CrewLinkApp.vue
@@ -166,6 +166,7 @@ const sheet = ref<CrewLinkSheet>(null)
 const username = ref('')
 const authMode = ref<'login' | 'register'>('login')
 const authUsername = ref('')
+const authPassword = ref('')
 const authProfilePhoto = ref<PhoneMedia | null>(null)
 const authPending = ref(false)
 const authError = ref('')
@@ -408,6 +409,7 @@ function showToast(message: string): void {
 function switchAuthMode(mode: 'login' | 'register'): void {
   authMode.value = mode
   authProfilePhoto.value = null
+  authPassword.value = ''
   authUsername.value =
     mode === 'register'
       ? (account.email.split('@')[0] ?? '')
@@ -419,6 +421,8 @@ function switchAuthMode(mode: 'login' | 'register'): void {
 
 function authErrorText(code?: string): string {
   const known = [
+    'invalid_credentials',
+    'invalid_password',
     'invalid_profile_image',
     'invalid_username',
     'no_ifruit_account',
@@ -438,56 +442,45 @@ async function submitAuthentication(): Promise<void> {
     authError.value = authErrorText('no_ifruit_account')
     return
   }
-  if (!authUsernameValid.value) {
+  if (authPassword.value.length < 8 || authPassword.value.length > 72) {
+    authError.value = authErrorText('invalid_password')
+    return
+  }
+  if (authMode.value === 'register' && !authUsernameValid.value) {
     authError.value = authErrorText('invalid_username')
     return
   }
 
   const submittedUsername = authUsername.value.trim()
   authPending.value = true
-  const loaded = await crew.bootstrap()
-  if (!loaded) {
-    authPending.value = false
-    authError.value = authErrorText(crew.error)
+  const response =
+    authMode.value === 'login'
+      ? await crew.login(authPassword.value)
+      : await crew.register(
+          submittedUsername,
+          authPassword.value,
+          authProfilePhoto.value?.id ?? 0,
+        )
+  authPending.value = false
+  if (!response.success || !crew.profile) {
+    authError.value = authErrorText(response.error)
     return
   }
 
-  if (authMode.value === 'login') {
-    authPending.value = false
-    if (!crew.profile) {
-      authError.value = authErrorText('profile_not_found')
-      return
-    }
-    if (
-      crew.profile.username.toLowerCase() !== submittedUsername.toLowerCase()
-    ) {
-      authError.value = authErrorText('invalid_username')
-      return
-    }
-  } else {
-    if (crew.profile) {
-      authPending.value = false
-      authError.value = authErrorText('profile_exists')
-      return
-    }
-    const response = await crew.createProfile(
-      submittedUsername,
-      authProfilePhoto.value?.id ?? 0,
-    )
-    authPending.value = false
-    if (!response.success) {
-      authError.value = authErrorText(response.error)
-      return
-    }
-  }
-
   appAuth.signIn('crewlink', account.email)
   username.value = crew.profile?.username ?? submittedUsername
   authUsername.value = ''
+  authPassword.value = ''
   authProfilePhoto.value = null
   openSharedInvite()
 }
 
+async function handleLoggedOut(): Promise<void> {
+  await crew.logout()
+  activeTab.value = 'map'
+  authPassword.value = ''
+}
+
 function openAuthMedia(app: 'camera' | 'photos'): void {
   messageMedia.begin(
     'crewlink:auth-avatar',
@@ -657,16 +650,6 @@ function removeProfilePhoto(): void {
   profileAvatarRemoved.value = true
 }
 
-async function createProfile(): Promise<void> {
-  const response = await crew.createProfile(username.value.trim())
-  if (!response.success) {
-    formError.value = errorText(response.error)
-    return
-  }
-  showToast(t('profileCreated'))
-  openSharedInvite()
-}
-
 async function createGroup(): Promise<void> {
   const response = await crew.createGroup(
     groupName.value.trim(),
@@ -1136,7 +1119,10 @@ onMounted(async () => {
     authProfilePhoto.value =
       authSelection.media[0] ?? authSelection.context?.selectedPhoto ?? null
   }
-  if (appAuth.isSignedIn('crewlink')) await crew.bootstrap()
+  if (appAuth.isSignedIn('crewlink')) {
+    await crew.bootstrap()
+    if (!crew.authenticated) appAuth.signOut('crewlink')
+  }
   username.value = crew.profile?.username ?? ''
   if (profileSelection && crew.profile) {
     username.value = profileSelection.context?.username ?? crew.profile.username
@@ -1173,6 +1159,7 @@ onBeforeUnmount(() => {
       <div class="crewlink-onboarding crewlink-auth">
         <AppProfileAuth
           :mode="authMode"
+          v-model:password="authPassword"
           v-model:username="authUsername"
           :avatar-url="authProfilePhoto?.url ?? null"
           :body="t('authBody')"
@@ -1186,10 +1173,14 @@ onBeforeUnmount(() => {
           :max-username-length="20"
           :min-username-length="3"
           :pending="authPending"
+          :password-label="t('password')"
+          :password-placeholder="t('passwordPlaceholder')"
           :register-label="t('register')"
+          require-password
           :title="t('authTitle')"
           :username-label="t('username')"
           :username-placeholder="t('usernamePlaceholder')"
+          variant="centered"
           @camera="openAuthMedia('camera')"
           @gallery="openAuthMedia('photos')"
           @submit="submitAuthentication"
@@ -1218,57 +1209,11 @@ onBeforeUnmount(() => {
       </div>
     </template>
 
-    <template v-else-if="!crew.profile">
-      <div class="crewlink-onboarding crewlink-onboarding--profile">
-        <div class="crewlink-orbits" aria-hidden="true">
-          <i></i><i></i><i></i><span><Radio /></span>
-        </div>
-        <small>{{ t('welcomeEyebrow') }}</small>
-        <h1>{{ t('welcomeTitle') }}</h1>
-        <p>{{ t('welcomeBody') }}</p>
-        <sky-list inset strong class="crewlink-form-list">
-          <sky-field
-            input-id="crewlink-username"
-            :label="t('username')"
-            :placeholder="t('usernamePlaceholder')"
-            :value="username"
-            maxlength="20"
-            outline
-            @input="updateValue('username', $event)"
-            @keydown.enter="handleEnterAction($event, createProfile)"
-          />
-        </sky-list>
-        <p v-if="formError" class="crewlink-error" role="alert">
-          {{ formError }}
-        </p>
-        <sky-button
-          large
-          rounded
-          :disabled="crew.isLoading"
-          @click="createProfile"
-        >
-          <sky-spinner v-if="crew.isLoading" />
-          <template v-else>{{ t('createProfile') }}</template>
-        </sky-button>
-        <sky-button
-          large
-          rounded
-          outline
-          class="crewlink-logout-button"
-          @click="logoutDialogOpen = true"
-        >
-          <LogOut />{{ phone.t('Common.signOut') }}
-        </sky-button>
-        <small class="crewlink-privacy"
-          ><ShieldCheck />{{ t('privacyNote') }}</small
-        >
-      </div>
-    </template>
-
-    <template v-else>
+    <template v-else-if="crew.profile">
       <sky-navbar
         v-if="activeGroup"
         class="crewlink-navbar"
+        :class="{ 'crewlink-navbar--map': activeTab === 'map' }"
         :subtitle="headerSubtitle"
         :title="headerTitle"
       />
@@ -1481,7 +1426,10 @@ onBeforeUnmount(() => {
             </div>
           </section>
 
-          <section v-show="activeTab === 'group'" class="crewlink-scroll-tab">
+          <section
+            v-show="activeTab === 'group'"
+            class="crewlink-scroll-tab crewlink-group-tab"
+          >
             <div class="crewlink-group-hero" :style="activeCrewStyle">
               <div class="crewlink-group-hero__signal"><Radio /></div>
               <small>{{ t('activeCrew') }}</small>
@@ -1674,7 +1622,10 @@ onBeforeUnmount(() => {
             </div>
           </section>
 
-          <section v-show="activeTab === 'profile'" class="crewlink-scroll-tab">
+          <section
+            v-show="activeTab === 'profile'"
+            class="crewlink-scroll-tab crewlink-profile-tab"
+          >
             <div
               class="crewlink-profile-card"
               :style="{ '--crew': activeColour }"
@@ -1891,6 +1842,10 @@ onBeforeUnmount(() => {
       <section
         v-if="sheet"
         class="crewlink-sheet__panel__content"
+        :class="{
+          'crewlink-sheet__panel__content--manage': sheet === 'edit-group',
+          'crewlink-sheet__panel__content--ping': sheet === 'ping',
+        }"
         role="dialog"
         aria-modal="true"
       >
@@ -2372,7 +2327,7 @@ onBeforeUnmount(() => {
       v-model:opened="logoutDialogOpen"
       app-id="crewlink"
       :app-name="t('name')"
-      @logged-out="activeTab = 'map'"
+      @logged-out="handleLoggedOut"
     />
 
     <sky-dialog
@@ -2409,6 +2364,7 @@ onBeforeUnmount(() => {
   --cl-surface: rgba(255, 255, 255, 0.84);
   --cl-text: #102034;
   --cl-muted: #6e7c8d;
+  --cl-map-header-background: linear-gradient(90deg, #061823, #0f2837);
   --sky-safe-area-top: 46px;
   --sky-safe-area-bottom: 25px;
   position: relative;
@@ -2428,22 +2384,13 @@ onBeforeUnmount(() => {
 }
 .crewlink-navbar {
   --sky-safe-area-top: 46px;
+  --sky-navbar-glass: var(--cl-bg);
   position: absolute;
   z-index: 20;
   top: 0;
   right: 0;
   left: 0;
 }
-.crewlink-navbar::after {
-  position: absolute;
-  top: 100%;
-  right: 0;
-  left: 0;
-  height: 22px;
-  background: linear-gradient(var(--cl-bg), transparent);
-  content: '';
-  pointer-events: none;
-}
 .crewlink-content {
   position: absolute;
   inset: 0;
@@ -2476,8 +2423,11 @@ onBeforeUnmount(() => {
 .crewlink-auth {
   --auth-accent: #20bde0;
   --panel: rgba(18, 39, 53, 0.92);
-  padding: 60px 18px 30px;
-  justify-content: flex-start;
+  box-sizing: border-box;
+  min-height: 100%;
+  padding: calc(var(--sky-safe-area-top) + 20px) 18px
+    calc(var(--sky-safe-area-bottom) + 20px);
+  justify-content: center;
   color: #f3f8fb;
   background:
     radial-gradient(circle at 82% 8%, rgba(39, 217, 237, 0.2), transparent 34%),
@@ -2485,7 +2435,9 @@ onBeforeUnmount(() => {
   overflow-y: auto;
 }
 .crewlink-auth :deep(.app-profile-auth) {
-  margin: 0 auto;
+  width: min(100%, 340px);
+  flex: none;
+  margin: auto;
 }
 .crewlink-logo {
   width: 78px;
@@ -2522,6 +2474,15 @@ onBeforeUnmount(() => {
 .crewlink-onboarding :deep(.button) {
   width: 100%;
 }
+.crewlink-navbar--map {
+  --sky-text: #f3f8fb;
+  --sky-muted: #aab7c1;
+  background: var(--cl-map-header-background);
+}
+.crewlink-navbar--map :deep(.sky-navbar__blur),
+.crewlink-navbar--map :deep(.sky-navbar__background) {
+  display: none;
+}
 .crewlink-orbits {
   width: 170px;
   height: 170px;
@@ -2703,17 +2664,27 @@ onBeforeUnmount(() => {
   padding-bottom: var(--sky-safe-area-bottom);
 }
 .crewlink-map-summary {
+  position: relative;
+  z-index: 1001;
   height: 64px;
   padding: 8px 13px;
   display: flex;
   align-items: center;
   justify-content: space-between;
   color: white;
-  background: linear-gradient(
-    90deg,
-    rgba(6, 24, 35, 0.96),
-    rgba(15, 41, 56, 0.95)
-  );
+  background: var(--cl-map-header-background);
+}
+.crewlink-map-summary::after {
+  position: absolute;
+  top: 100%;
+  right: 0;
+  left: 0;
+  height: 16px;
+  background: var(--cl-map-header-background);
+  -webkit-mask-image: linear-gradient(to bottom, #000, transparent);
+  mask-image: linear-gradient(to bottom, #000, transparent);
+  content: '';
+  pointer-events: none;
 }
 .crewlink-map-summary > div:first-child {
   display: grid;
@@ -3020,6 +2991,14 @@ onBeforeUnmount(() => {
     linear-gradient(145deg, #0b2433, #0b1825);
   box-shadow: 0 15px 35px rgba(6, 20, 31, 0.2);
 }
+.crewlink-group-tab {
+  --sky-card-outer-left: 0px;
+  --sky-card-outer-right: 0px;
+  --sky-list-outer-left: 0px;
+  --sky-list-outer-right: 0px;
+  --sky-title-gutter-left: 0px;
+  --sky-title-gutter-right: 0px;
+}
 .crewlink-group-hero__signal {
   width: 48px;
   height: 48px;
@@ -3311,6 +3290,12 @@ onBeforeUnmount(() => {
   color: white;
   background: linear-gradient(145deg, var(--crew), #183a5a);
 }
+.crewlink-profile-tab {
+  --sky-list-outer-left: 0px;
+  --sky-list-outer-right: 0px;
+  --sky-title-gutter-left: 0px;
+  --sky-title-gutter-right: 0px;
+}
 .crewlink-profile-card > span {
   width: 54px;
   height: 54px;
@@ -3413,6 +3398,16 @@ onBeforeUnmount(() => {
   background: var(--cl-bg);
   border-radius: 24px 24px 0 0;
 }
+.crewlink-sheet__panel__content--manage {
+  --sky-card-outer-left: 0px;
+  --sky-card-outer-right: 0px;
+  --sky-list-outer-left: 0px;
+  --sky-list-outer-right: 0px;
+}
+.crewlink-sheet__panel__content--ping {
+  --sky-list-outer-left: 0px;
+  --sky-list-outer-right: 0px;
+}
 .crewlink-sheet__panel__close {
   position: absolute;
   right: 14px;
diff --git a/frontend/testserver/index.cjs b/frontend/testserver/index.cjs
index 707e004..0d3a4b2 100644
--- a/frontend/testserver/index.cjs
+++ b/frontend/testserver/index.cjs
@@ -85,9 +85,7 @@ function memoWaveform(phase = 0) {
 
 let authenticated = true
 let draft = null
-let mockMailboxes = [
-  { count: 0, id: 7, name: 'Projects', sort_order: 0 },
-]
+let mockMailboxes = [{ count: 0, id: 7, name: 'Projects', sort_order: 0 }]
 let nextMockMailboxId = 8
 const radioData = {
   badge: '231',
@@ -218,6 +216,8 @@ let crewLinkProfile = {
   overheadVisible: false,
   username: 'Skyline',
 }
+const crewLinkTestPassword = 'CrewLink123!'
+let crewLinkAuthenticated = false
 let crewLinkGroups = [
   {
     allowMemberPings: true,
@@ -420,14 +420,18 @@ const crewLinkLimits = {
 }
 
 function crewLinkBootstrap(testScenario = '') {
+  if (!crewLinkAuthenticated) {
+    return { authenticated: false, groups: [], invitations: [], profile: null }
+  }
   if (
     testScenario === 'crewlink-onboarding' ||
     (testScenario === 'crewlink-register' && !crewLinkProfile)
   ) {
-    return { groups: [], invitations: [], profile: null }
+    return { authenticated: true, groups: [], invitations: [], profile: null }
   }
   if (testScenario === 'crewlink-empty') {
     return {
+      authenticated: true,
       activeGroup: null,
       groups: [],
       invitations: crewLinkInvitations,
@@ -439,6 +443,7 @@ function crewLinkBootstrap(testScenario = '') {
     (group) => group.id === crewLinkProfile.activeGroupId,
   )
   return {
+    authenticated: true,
     activeGroup: activeSummary
       ? {
           ...activeSummary,
@@ -3425,8 +3430,7 @@ function counts() {
   return {
     drafts: draft ? 1 : 0,
     inbox: messages.filter(
-      (item) =>
-        item.folder === 'inbox' && !item.mailbox_id && !item.trashed_at,
+      (item) => item.folder === 'inbox' && !item.mailbox_id && !item.trashed_at,
     ).length,
     sent: messages.filter(
       (item) => item.folder === 'sent' && !item.mailbox_id && !item.trashed_at,
@@ -3446,8 +3450,7 @@ function mailboxViews() {
   return mockMailboxes.map((mailbox) => ({
     ...mailbox,
     count: messages.filter(
-      (message) =>
-        message.mailbox_id === mailbox.id && !message.trashed_at,
+      (message) => message.mailbox_id === mailbox.id && !message.trashed_at,
     ).length,
   }))
 }
@@ -4127,15 +4130,13 @@ function companyWorkContext(testScenario = '') {
 
 app.post('/api/:endpoint', async (request, response, next) => {
   const endpoint = request.params.endpoint
-  console.log(
-    `[NUI] ${endpoint}`,
-    endpoint === 'memos:devCapture'
-      ? {
-          ...request.body,
-          audioDataUrl: `<${String(request.body.audioDataUrl ?? '').length} characters>`,
-        }
-      : request.body,
-  )
+  const loggedBody = { ...request.body }
+  if (typeof loggedBody.password === 'string')
+    loggedBody.password = '<redacted>'
+  if (endpoint === 'memos:devCapture') {
+    loggedBody.audioDataUrl = `<${String(request.body.audioDataUrl ?? '').length} characters>`
+  }
+  console.log(`[NUI] ${endpoint}`, loggedBody)
   if (endpoint === 'music:bootstrap') {
     response.json({ success: true, data: musicBootstrap() })
     return
@@ -5616,12 +5617,30 @@ app.post('/api/:endpoint', (request, response) => {
     response.json({ success: true, data: crewLinkBootstrap(testScenario) })
     return
   }
-  if (endpoint === 'crewlink:create-profile') {
+  if (endpoint === 'crewlink:login') {
+    if (!crewLinkProfile || request.body.password !== crewLinkTestPassword) {
+      response.json({ success: false, error: 'invalid_credentials' })
+      return
+    }
+    crewLinkAuthenticated = true
+    response.json({ success: true, data: crewLinkBootstrap(testScenario) })
+    return
+  }
+  if (endpoint === 'crewlink:register') {
     const username = String(request.body.username ?? '').trim()
     if (!/^[A-Za-z0-9][A-Za-z0-9._]{1,18}[A-Za-z0-9]$/.test(username)) {
       response.json({ success: false, error: 'invalid_username' })
       return
     }
+    const password = String(request.body.password ?? '')
+    if (password.length < 8 || password.length > 72) {
+      response.json({ success: false, error: 'invalid_password' })
+      return
+    }
+    if (crewLinkProfile) {
+      response.json({ success: false, error: 'profile_exists' })
+      return
+    }
     crewLinkProfile = {
       activeGroupId: null,
       avatarMediaId: Number(request.body.avatarMediaId) || null,
@@ -5633,7 +5652,13 @@ app.post('/api/:endpoint', (request, response) => {
       overheadVisible: false,
       username,
     }
-    response.json({ success: true, data: crewLinkBootstrap() })
+    crewLinkAuthenticated = true
+    response.json({ success: true, data: crewLinkBootstrap(testScenario) })
+    return
+  }
+  if (endpoint === 'crewlink:logout') {
+    crewLinkAuthenticated = false
+    response.json({ success: true })
     return
   }
   if (endpoint === 'crewlink:update-profile') {
@@ -8585,6 +8610,7 @@ app.post('/api/:endpoint', (request, response) => {
     return
   }
   if (endpoint === 'development:bootstrap') {
+    crewLinkAuthenticated = false
     authenticated = testScenario !== 'setup-account-unlinked'
     linkedAccount = authenticated
       ? {
@@ -10364,13 +10390,13 @@ app.post('/api/:endpoint', (request, response) => {
           ? messages.filter(
               (item) => item.mailbox_id === mailboxId && !item.trashed_at,
             )
-        : messages.filter((item) =>
-            folder === 'trash'
-              ? item.trashed_at
-              : item.folder === folder &&
-                !item.mailbox_id &&
-                !item.trashed_at,
-          )
+          : messages.filter((item) =>
+              folder === 'trash'
+                ? item.trashed_at
+                : item.folder === folder &&
+                  !item.mailbox_id &&
+                  !item.trashed_at,
+            )
     const query = String(search).toLowerCase()
     if (query) {
       items = items.filter((item) =>
diff --git a/frontend/testserver/smoke.cjs b/frontend/testserver/smoke.cjs
index 25e1d33..aaec0a8 100644
--- a/frontend/testserver/smoke.cjs
+++ b/frontend/testserver/smoke.cjs
@@ -17,6 +17,7 @@ const browserDataRequests = [
   ['companies:work-context', {}],
   ['companies:work-queue', { limit: 20, offset: 0 }],
   ['contacts:list', {}],
+  ['crewlink:login', { password: 'CrewLink123!' }],
   ['crewlink:bootstrap', {}],
   ['crewlink:live', {}],
   ['crewlink:nearby', {}],
@@ -733,12 +734,7 @@ async function verifyStatefulActions(baseUrl) {
     { name: 'Browser Test' },
     true,
   )
-  const mailboxes = await expectSuccess(
-    baseUrl,
-    'mail:mailboxes',
-    {},
-    true,
-  )
+  const mailboxes = await expectSuccess(baseUrl, 'mail:mailboxes', {}, true)
   assert(
     mailboxes.mailboxes.some((item) => item.id === mailbox.id),
     'mail:create-mailbox did not update the mock mailbox list',
diff --git a/sky_phone/config/config.lua b/sky_phone/config/config.lua
index b4179c7..bc6f75a 100644
--- a/sky_phone/config/config.lua
+++ b/sky_phone/config/config.lua
@@ -510,6 +510,8 @@ Config.MapMarkers = {
 Config.CrewLink = {
     UsernameMinLength = 3,
     UsernameMaxLength = 20,
+    PasswordMinLength = 8,
+    PasswordMaxLength = 72,
     GroupNameMinLength = 3,
     GroupNameMaxLength = 32,
     MaximumGroupsPerProfile = 5,
@@ -651,6 +653,7 @@ if IsDuplicityVersion() then
     Config.Server = {
         -- Keep these values private and stable. Changing a pepper invalidates existing app passwords.
         PasscodePepper = "f626581802800478346266e66414d8e6f2c28050214a593c25901904c162bffe",
+        CrewLinkPasswordPepper = "2751e5729aee4955a529c1a87104b58fbe1d7280b18b66264236028caa06eb47",
         FlipTokPasswordPepper = "a85ea307680f1205a4fda03be8af18ecf7edf16ffc83450b90cac7e41a9719a7",
         PicstagramPasswordPepper = "653e41dd19aba5ef750a668ad1886273ba7d0e0420bd5c745748df80a6e22676",
     }
diff --git a/sky_phone/config/locales/en.lua b/sky_phone/config/locales/en.lua
index eb2763a..f97b921 100644
--- a/sky_phone/config/locales/en.lua
+++ b/sky_phone/config/locales/en.lua
@@ -378,10 +378,10 @@ Locales["en"] = {
                 name = "CrewLink", connecting = "Connecting your crew...", privateNetwork = "Private location network",
                 signInTitle = "Connect your Sky Cloud account", signInBody = "CrewLink uses your private Sky Cloud identity to keep groups and roles available across your phones.", openSettings = "Open Sky Cloud settings",
                 authEyebrow = "Private crew network", authTitle = "Welcome to CrewLink",
-                authBody = "Your iFruit email is linked automatically. Use your CrewLink username to continue.",
-                login = "Log in", register = "Register", ifruitEmail = "iFruit address", gallery = "Photos", camera = "Camera", backToLogin = "Back to CrewLink login",
+                authBody = "Your iFruit email is linked automatically. Enter your password to continue.",
+                login = "Log in", register = "Register", ifruitEmail = "iFruit address", password = "Password", passwordPlaceholder = "8-72 characters", gallery = "Photos", camera = "Camera", backToLogin = "Back to CrewLink login",
                 authErrors = {
-                    no_ifruit_account = "Sign in to your Sky Cloud account in Settings first.", invalid_username = "Use 3-20 letters, numbers, dots, or underscores.",
+                    no_ifruit_account = "Sign in to your Sky Cloud account in Settings first.", invalid_username = "Use 3-20 letters, numbers, dots, or underscores.", invalid_password = "Password must be 8-72 characters.", invalid_credentials = "The password for this iFruit email is incorrect.",
                     profile_not_found = "No CrewLink profile exists for this iFruit email.", profile_exists = "This iFruit email already has a CrewLink profile.",
                     username_taken = "That CrewLink username is already taken.", invalid_profile_image = "Choose a valid photo from this phone.",
                     rate_limited = "Too many attempts. Try again shortly.", request_failed = "CrewLink could not complete the request.",
diff --git a/sky_phone/source/client/main.lua b/sky_phone/source/client/main.lua
index 96fd6fc..a0c7b04 100644
--- a/sky_phone/source/client/main.lua
+++ b/sky_phone/source/client/main.lua
@@ -186,7 +186,9 @@ local server_callbacks = {
     "map:create-marker",
     "map:delete-marker",
     "crewlink:bootstrap",
-    "crewlink:create-profile",
+    "crewlink:login",
+    "crewlink:register",
+    "crewlink:logout",
     "crewlink:update-profile",
     "crewlink:create-group",
     "crewlink:update-group",
diff --git a/sky_phone/source/server/crewlink.lua b/sky_phone/source/server/crewlink.lua
index 7019ffd..a765e58 100644
--- a/sky_phone/source/server/crewlink.lua
+++ b/sky_phone/source/server/crewlink.lua
@@ -1,4 +1,5 @@
 Bridge.Database.AfterMigration("sky_phone", function()
+local password_pepper = tostring(Config.Server.CrewLinkPasswordPepper or "")
 local role_levels = {
     guest = 1,
     member = 2,
@@ -32,6 +33,14 @@ local live_sources_cache = {
     sources = {},
 }
 
+if password_pepper == "" then
+    Bridge.Debug(
+        "warn",
+        "[sky_phone] Config.Server.CrewLinkPasswordPepper is empty. CrewLink passwords still work, but their hashes lack the required server-side secret. Set a stable random value in config/config.lua before production; changing it later invalidates existing CrewLink passwords.",
+        { always = true }
+    )
+end
+
 local function affected_rows(result)
     if type(result) == "number" then
         return result
@@ -90,26 +99,31 @@ local function profile_dto(row)
     }
 end
 
-local function require_profile(source)
-    local account, error_response = SkyPhone.RequireAccount(source)
-    if not account then
+local function profile_for_session(source)
+    local session, error_response = SkyPhone.RequireSession(source)
+    if not session then
         return nil, error_response
     end
     local rows = Bridge.Database.Query([[
         SELECT p.`id`, p.`account_id`, p.`username`, p.`avatar_media_id`, p.`active_group_id`,
             p.`map_visible`, p.`overhead_visible`, avatar.`url` AS `avatar_url`
-        FROM `sky_phone_crewlink_profiles` p
+        FROM `sky_phone_crewlink_sessions` crew_session
+        JOIN `sky_phone_crewlink_profiles` p ON p.`id` = crew_session.`profile_id`
         LEFT JOIN `sky_phone_media` avatar ON avatar.`id` = p.`avatar_media_id`
-        WHERE p.`account_id` = ?
+        WHERE crew_session.`device_imei` = ?
         LIMIT 1
-    ]], { account.id })
+    ]], { session.imei })
     if not rows[1] then
-        return nil, { success = false, error = "profile_required" }
+        return nil, { success = false, error = "not_authenticated" }
     end
     rows[1].account_id = tonumber(rows[1].account_id)
     return rows[1]
 end
 
+local function require_profile(source)
+    return profile_for_session(source)
+end
+
 local function membership(profile_id, group_id)
     local rows = Bridge.Database.Query([[
         SELECT m.`group_id`, m.`profile_id`, m.`role`, m.`joined_at`,
@@ -359,6 +373,13 @@ local function valid_username(value)
     return username
 end
 
+local function valid_password(value)
+    local length = type(value) == "string" and utf8.len(value) or nil
+    return length
+        and length >= Config.CrewLink.PasswordMinLength
+        and length <= Config.CrewLink.PasswordMaxLength
+end
+
 local function valid_group_name(value)
     local name = trim(value)
     return valid_text(name, Config.CrewLink.GroupNameMinLength, Config.CrewLink.GroupNameMaxLength)
@@ -399,26 +420,23 @@ Bridge.Callbacks.Register("sky_phone:crewlink:bootstrap", function(source)
     ) then
         return { success = false, error = "rate_limited" }
     end
-    local account, error_response = SkyPhone.RequireAccount(source)
-    if not account then
-        return error_response
+    local profile, error_response = profile_for_session(source)
+    if not profile then
+        if error_response and error_response.error ~= "not_authenticated" then
+            return error_response
+        end
+        return {
+            success = true,
+            data = { authenticated = false, profile = nil, groups = {}, invitations = {} },
+        }
     end
-    local rows = Bridge.Database.Query([[
-        SELECT p.`id`, p.`account_id`, p.`username`, p.`avatar_media_id`, p.`active_group_id`,
-            p.`map_visible`, p.`overhead_visible`, avatar.`url` AS `avatar_url`
-        FROM `sky_phone_crewlink_profiles` p
-        LEFT JOIN `sky_phone_media` avatar ON avatar.`id` = p.`avatar_media_id`
-        WHERE p.`account_id` = ? LIMIT 1
-    ]], { account.id })
-    if not rows[1] then
-        return { success = true, data = { profile = nil, groups = {}, invitations = {} } }
-    end
-    rows[1].account_id = tonumber(rows[1].account_id)
-    return { success = true, data = bootstrap(rows[1]) }
+    local data = bootstrap(profile)
+    data.authenticated = true
+    return { success = true, data = data }
 end)
 
-Bridge.Callbacks.Register("sky_phone:crewlink:create-profile", function(source, data)
-    if not allow(source, "profile") then
+Bridge.Callbacks.Register("sky_phone:crewlink:register", function(source, data)
+    if not SkyPhone.AllowOperation(source, "crewlink:register", 5, 60) then
         return { success = false, error = "rate_limited" }
     end
     local account, error_response = SkyPhone.RequireAccount(source)
@@ -430,6 +448,9 @@ Bridge.Callbacks.Register("sky_phone:crewlink:create-profile", function(source,
     if not username then
         return { success = false, error = "invalid_username" }
     end
+    if not valid_password(data.password) then
+        return { success = false, error = "invalid_password" }
+    end
     local avatar_media_id = tonumber(data.avatarMediaId) or 0
     if avatar_media_id < 0 or avatar_media_id ~= math.floor(avatar_media_id) then
         return { success = false, error = "invalid_profile_image" }
@@ -437,15 +458,107 @@ Bridge.Callbacks.Register("sky_phone:crewlink:create-profile", function(source,
     if avatar_media_id > 0 and not SkyPhoneMedia.ResolveOwnedMedia(source, avatar_media_id, "photo") then
         return { success = false, error = "invalid_profile_image" }
     end
-    local result = Bridge.Database.Query([[
-        INSERT IGNORE INTO `sky_phone_crewlink_profiles` (`id`, `account_id`, `username`, `avatar_media_id`)
-        VALUES (?, ?, ?, NULLIF(?, 0))
-    ]], { new_id(), account.id, username, avatar_media_id })
-    if affected_rows(result) ~= 1 then
+    local existing = Bridge.Database.Query([[
+        SELECT p.`id`, c.`profile_id` AS `credential_profile_id`
+        FROM `sky_phone_crewlink_profiles` p
+        LEFT JOIN `sky_phone_crewlink_credentials` c ON c.`profile_id` = p.`id`
+        WHERE p.`account_id` = ? LIMIT 1
+    ]], { account.id })[1]
+    if existing and existing.credential_profile_id then
+        return { success = false, error = "profile_exists" }
+    end
+    local duplicate = Bridge.Database.Query([[
+        SELECT `id` FROM `sky_phone_crewlink_profiles`
+        WHERE `username` = ? AND `account_id` <> ? LIMIT 1
+    ]], { username, account.id })
+    if duplicate[1] then
         return { success = false, error = "username_taken" }
     end
+    local entropy = Bridge.Database.Query(
+        "SELECT UUID() AS `id`, REPLACE(UUID(), '-', '') AS `salt`",
+        {}
+    )[1]
+    if not entropy or type(entropy.id) ~= "string" or type(entropy.salt) ~= "string" then
+        error("[sky_phone] Database did not generate CrewLink registration entropy.")
+    end
+    local profile_id = existing and existing.id or entropy.id
+    local queries = {}
+    if existing then
+        queries[#queries + 1] = {
+            query = [[UPDATE `sky_phone_crewlink_profiles`
+                SET `username` = ?, `avatar_media_id` = NULLIF(?, 0) WHERE `id` = ?]],
+            params = { username, avatar_media_id, profile_id },
+        }
+    else
+        queries[#queries + 1] = {
+            query = [[INSERT INTO `sky_phone_crewlink_profiles`
+                (`id`, `account_id`, `username`, `avatar_media_id`) VALUES (?, ?, ?, NULLIF(?, 0))]],
+            params = { profile_id, account.id, username, avatar_media_id },
+        }
+    end
+    queries[#queries + 1] = {
+        query = [[INSERT INTO `sky_phone_crewlink_credentials`
+            (`profile_id`, `password_hash`, `password_salt`)
+            VALUES (?, UNHEX(SHA2(CONCAT(?, ?, ?), 256)), ?)]],
+        params = { profile_id, password_pepper, entropy.salt, data.password, entropy.salt },
+    }
+    queries[#queries + 1] = {
+        query = [[INSERT INTO `sky_phone_crewlink_sessions` (`device_imei`, `profile_id`)
+            VALUES (?, ?) ON DUPLICATE KEY UPDATE `profile_id` = VALUES(`profile_id`),
+                `updated_at` = CURRENT_TIMESTAMP]],
+        params = { account.imei, profile_id },
+    }
+    if not Bridge.Database.Transaction(queries) then
+        return { success = false, error = "request_failed" }
+    end
     local profile = require_profile(source)
-    return { success = true, data = bootstrap(profile) }
+    local response = bootstrap(profile)
+    response.authenticated = true
+    return { success = true, data = response }
+end)
+
+Bridge.Callbacks.Register("sky_phone:crewlink:login", function(source, data)
+    if not SkyPhone.AllowOperation(source, "crewlink:login", 10, 60) then
+        return { success = false, error = "rate_limited" }
+    end
+    local account, error_response = SkyPhone.RequireAccount(source)
+    if not account then
+        return error_response
+    end
+    if type(data) ~= "table" or not valid_password(data.password) then
+        return { success = false, error = "invalid_credentials" }
+    end
+    local profiles = Bridge.Database.Query([[
+        SELECT p.`id` FROM `sky_phone_crewlink_profiles` p
+        JOIN `sky_phone_crewlink_credentials` c ON c.`profile_id` = p.`id`
+        WHERE p.`account_id` = ?
+            AND c.`password_hash` = UNHEX(SHA2(CONCAT(?, c.`password_salt`, ?), 256))
+        LIMIT 1
+    ]], { account.id, password_pepper, data.password })
+    if not profiles[1] then
+        return { success = false, error = "invalid_credentials" }
+    end
+    Bridge.Database.Query([[
+        INSERT INTO `sky_phone_crewlink_sessions` (`device_imei`, `profile_id`)
+        VALUES (?, ?) ON DUPLICATE KEY UPDATE `profile_id` = VALUES(`profile_id`),
+            `updated_at` = CURRENT_TIMESTAMP
+    ]], { account.imei, profiles[1].id })
+    local profile = require_profile(source)
+    local response = bootstrap(profile)
+    response.authenticated = true
+    return { success = true, data = response }
+end)
+
+Bridge.Callbacks.Register("sky_phone:crewlink:logout", function(source)
+    local session, error_response = SkyPhone.RequireSession(source)
+    if not session then
+        return error_response
+    end
+    Bridge.Database.Query(
+        "DELETE FROM `sky_phone_crewlink_sessions` WHERE `device_imei` = ?",
+        { session.imei }
+    )
+    return { success = true }
 end)
 
 Bridge.Callbacks.Register("sky_phone:crewlink:update-profile", function(source, data)
diff --git a/sky_phone/source/server/db_migrate.lua b/sky_phone/source/server/db_migrate.lua
index 3607bbb..69802c7 100644
--- a/sky_phone/source/server/db_migrate.lua
+++ b/sky_phone/source/server/db_migrate.lua
@@ -2391,6 +2391,39 @@ local schema = {
         },
         tableOptions = "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci",
     },
+    {
+        name = "sky_phone_crewlink_credentials",
+        columns = {
+            { name = "profile_id", type = "CHAR(36) NOT NULL", characterSet = "ascii", collation = "ascii_bin" },
+            { name = "password_hash", type = "BINARY(32) NOT NULL" },
+            { name = "password_salt", type = "CHAR(32) NOT NULL", characterSet = "ascii", collation = "ascii_bin" },
+            { name = "created_at", type = "DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP" },
+            { name = "updated_at", type = "DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP" },
+        },
+        primaryKey = "profile_id",
+        foreignKeys = {
+            { column = "profile_id", references = "`sky_phone_crewlink_profiles` (`id`) ON DELETE CASCADE" },
+        },
+        tableOptions = "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci",
+    },
+    {
+        name = "sky_phone_crewlink_sessions",
+        columns = {
+            { name = "device_imei", type = "CHAR(15) NOT NULL", characterSet = "ascii", collation = "ascii_bin" },
+            { name = "profile_id", type = "CHAR(36) NOT NULL", characterSet = "ascii", collation = "ascii_bin" },
+            { name = "created_at", type = "DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP" },
+            { name = "updated_at", type = "DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP" },
+        },
+        primaryKey = "device_imei",
+        indexes = {
+            { name = "idx_sky_phone_crewlink_sessions_profile", columns = "(`profile_id`, `updated_at`)" },
+        },
+        foreignKeys = {
+            { column = "device_imei", references = "`sky_phone_devices` (`imei`) ON DELETE CASCADE" },
+            { column = "profile_id", references = "`sky_phone_crewlink_profiles` (`id`) ON DELETE CASCADE" },
+        },
+        tableOptions = "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci",
+    },
     {
         name = "sky_phone_crewlink_groups",
         columns = {
diff --git a/sky_phone/source/server/testdata.lua b/sky_phone/source/server/testdata.lua
index 990d9e2..bc466c3 100644
--- a/sky_phone/source/server/testdata.lua
+++ b/sky_phone/source/server/testdata.lua
@@ -741,6 +741,19 @@ local function seed_private_and_services(context)
     ]], { crew_bot_seed, bot_id })
     local crew_user = ensure_string_profile("sky_phone_crewlink_profiles", account_id)
     local crew_bot = ensure_string_profile("sky_phone_crewlink_profiles", bot_id)
+    local crew_password_salt = crew_user_seed:gsub("-", "")
+    local crew_bot_password_salt = crew_bot_seed:gsub("-", "")
+    local crew_password_pepper = tostring(Config.Server.CrewLinkPasswordPepper or "")
+    Bridge.Database.Query([[
+        INSERT INTO `sky_phone_crewlink_credentials` (`profile_id`, `password_hash`, `password_salt`)
+        VALUES (?, UNHEX(SHA2(CONCAT(?, ?, 'CrewLink123!'), 256)), ?),
+            (?, UNHEX(SHA2(CONCAT(?, ?, 'CrewLink123!'), 256)), ?)
+        ON DUPLICATE KEY UPDATE `password_hash` = VALUES(`password_hash`),
+            `password_salt` = VALUES(`password_salt`)
+    ]], {
+        crew_user, crew_password_pepper, crew_password_salt, crew_password_salt,
+        crew_bot, crew_password_pepper, crew_bot_password_salt, crew_bot_password_salt,
+    })
     Bridge.Database.Query([[
         INSERT INTO `sky_phone_crewlink_groups`
             (`id`, `name`, `colour`, `owner_profile_id`, `invite_code`, `allow_member_pings`, `overhead_allowed`)
diff --git a/sky_phone/sql/install.sql b/sky_phone/sql/install.sql
index 9cfc4cf..9c9bf76 100644
--- a/sky_phone/sql/install.sql
+++ b/sky_phone/sql/install.sql
@@ -1060,6 +1060,27 @@ CREATE TABLE IF NOT EXISTS `sky_phone_crewlink_profiles` (
     FOREIGN KEY (`avatar_media_id`) REFERENCES `sky_phone_media` (`id`) ON DELETE SET NULL
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
+CREATE TABLE IF NOT EXISTS `sky_phone_crewlink_credentials` (
+    `profile_id` CHAR(36) CHARACTER SET ascii COLLATE ascii_bin NOT NULL,
+    `password_hash` BINARY(32) NOT NULL,
+    `password_salt` CHAR(32) CHARACTER SET ascii COLLATE ascii_bin NOT NULL,
+    `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    `updated_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    PRIMARY KEY (`profile_id`),
+    FOREIGN KEY (`profile_id`) REFERENCES `sky_phone_crewlink_profiles` (`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS `sky_phone_crewlink_sessions` (
+    `device_imei` CHAR(15) CHARACTER SET ascii COLLATE ascii_bin NOT NULL,
+    `profile_id` CHAR(36) CHARACTER SET ascii COLLATE ascii_bin NOT NULL,
+    `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    `updated_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    PRIMARY KEY (`device_imei`),
+    KEY `idx_sky_phone_crewlink_sessions_profile` (`profile_id`,`updated_at`),
+    FOREIGN KEY (`device_imei`) REFERENCES `sky_phone_devices` (`imei`) ON DELETE CASCADE,
+    FOREIGN KEY (`profile_id`) REFERENCES `sky_phone_crewlink_profiles` (`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
 CREATE TABLE IF NOT EXISTS `sky_phone_crewlink_groups` (
     `id` CHAR(36) CHARACTER SET ascii COLLATE ascii_bin NOT NULL,
     `name` VARCHAR(32) NOT NULL,