Login Passkey

iOS

uniwind/components/blocks/login-passkey.tsx

import { cn } from "cn"
import { CheckIcon, KeyIcon, ScanSmileyIcon } from "phosphor-react-native"
import * as React from "react"
import { Pressable, ScrollView, View } from "react-native"
import {
  cancelAnimation,
  FadeInDown,
  ReduceMotion,
  useAnimatedStyle,
  useSharedValue,
  withRepeat,
  withSequence,
  withSpring,
  withTiming,
} from "react-native-reanimated"
import { AnimatedView } from "@/components/ui/animated-view"

swift/Blocks/LoginPasskey.swift

import PhosphorSwift
import SwiftUI

public struct LoginPasskey: View {
  enum Status: Sendable {
    case idle, scan, ok, done
  }

  private var onChangeAccount: (() -> Void)?
  private var onUsePassword: (() -> Void)?
  private var onContinue: (() -> Void)?
  @State private var status: Status
  @State private var task: Task<Void, Never>?
  @Environment(\.accessibilityReduceMotion) private var reduceMotion

  public init(

kotlin/blocks/LoginPasskey.kt

package com.esuiss.ui.blocks

import androidx.compose.animation.core.Animatable
import androidx.compose.animation.core.CubicBezierEasing
import androidx.compose.animation.core.RepeatMode
import androidx.compose.animation.core.animateFloat
import androidx.compose.animation.core.animateFloatAsState
import androidx.compose.animation.core.infiniteRepeatable
import androidx.compose.animation.core.rememberInfiniteTransition
import androidx.compose.animation.core.tween
import androidx.compose.foundation.background
import androidx.compose.foundation.clickable
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.interaction.collectIsPressedAsState
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box

A sign-in screen that shows the account with an Avatar, a Change link, a Continue with passkey Button and a link to sign in with a password. Continuing opens a Dialog with an animated scan glyph that turns into a verified state, then shows a welcome view with a Sign out link. The dialog can be cancelled during the scan.

Installation

$ pnpm dlx @esuiss/uim@latest add login-passkey

The CLI also adds what it builds on: Avatar, Button, Dialog, Icon, Screen, Text.

Manual

Install the dependencies:

npx expo install cn phosphor-react-native react-native-reanimated react-native-svg react-native-worklets

Add the pieces it builds on: Avatar, Button, Dialog, Icon, Screen, Text.
Copy the source into components/blocks/login-passkey.tsx:

uniwind/components/blocks/login-passkey.tsx

import { cn } from "cn"
import { CheckIcon, KeyIcon, ScanSmileyIcon } from "phosphor-react-native"
import * as React from "react"
import { Pressable, ScrollView, View } from "react-native"
import {
  cancelAnimation,
  FadeInDown,
  ReduceMotion,
  useAnimatedStyle,
  useSharedValue,
  withRepeat,
  withSequence,
  withSpring,
  withTiming,
} from "react-native-reanimated"
import { AnimatedView } from "@/components/ui/animated-view"

Update the import paths to match your project.

Install the dependencies:

npx expo install cn phosphor-react-native react-native-reanimated react-native-svg react-native-worklets

Add the pieces it builds on: Avatar, Button, Dialog, Icon, Screen, Text.
Copy the source into components/blocks/login-passkey.tsx:

nativewind/components/blocks/login-passkey.tsx

import { cn } from "cn"
import { CheckIcon, KeyIcon, ScanSmileyIcon } from "phosphor-react-native"
import * as React from "react"
import { Pressable, ScrollView, View } from "react-native"
import {
  cancelAnimation,
  FadeInDown,
  ReduceMotion,
  useAnimatedStyle,
  useSharedValue,
  withRepeat,
  withSequence,
  withSpring,
  withTiming,
} from "react-native-reanimated"
import { AnimatedView } from "@/components/ui/animated-view"

Update the import paths to match your project.

Install the dependencies:

npx expo install phosphor-react-native react-native-reanimated react-native-svg react-native-worklets

Add the pieces it builds on: Avatar, Button, Dialog, Icon, Screen, Text.
Copy the source into components/blocks/login-passkey.tsx:

stylesheet/components/blocks/login-passkey.tsx

import { CheckIcon, KeyIcon, ScanSmileyIcon } from "phosphor-react-native"
import * as React from "react"
import {
  Pressable,
  ScrollView,
  StyleSheet,
  type TextStyle,
  View,
} from "react-native"
import {
  cancelAnimation,
  FadeInDown,
  ReduceMotion,
  useAnimatedStyle,
  useSharedValue,
  withRepeat,

Update the import paths to match your project.

Target iOS 17 or later.
Add the Swift package to your app:

Package.swift

.package(url: "https://github.com/phosphor-icons/swift", from: "2.1.0")

Copy the theme files every view uses:

swift/Theme/Theme.swift

import SwiftUI
import UIKit

struct RGBA: Sendable {
  let red: CGFloat
  let green: CGFloat
  let blue: CGFloat
  let alpha: CGFloat

  init(_ hex: UInt32, _ alpha: CGFloat = 1) {
    red = CGFloat((hex >> 16) & 0xFF) / 255
    green = CGFloat((hex >> 8) & 0xFF) / 255
    blue = CGFloat(hex & 0xFF) / 255
    self.alpha = alpha
  }

swift/Theme/Tokens.swift

import SwiftUI

extension Color {
  public static let surface = Color.adaptive(light: .init(0xFFFFFF), dark: .init(0x000000))
  public static let surfaceSecondary = Color.adaptive(light: .init(0xF5F5F7), dark: .init(0x161617))
  public static let surfaceTertiary = Color.adaptive(light: .init(0xE8E8ED), dark: .init(0x2C2C2E))
  public static let surfaceRaised = Color.adaptive(light: .init(0xFFFFFF), dark: .init(0x1D1D1F))
  public static let label = Color.adaptive(light: .init(0x1D1D1F), dark: .init(0xF5F5F7))
  public static let labelSecondary = Color.adaptive(light: .init(0x6E6E73), dark: .init(0xA1A1A6))
  public static let labelTertiary = Color.adaptive(light: .init(0x86868B), dark: .init(0x86868B))
  public static let labelQuaternary = Color.adaptive(light: .init(0xD2D2D7), dark: .init(0x424245))
  public static let control = Color.adaptive(light: .init(0x000000, 0.04), dark: .init(0xFFFFFF, 0.1))
  public static let controlPressed = Color.adaptive(light: .init(0x000000, 0.12), dark: .init(0xFFFFFF, 0.22))
  public static let controlSelected = Color.adaptive(light: .init(0x1D1D1F), dark: .init(0xF5F5F7))
  public static let controlDisabled = Color.adaptive(light: .init(0x000000, 0.03), dark: .init(0xFFFFFF, 0.05))
  public static let onControlSelected = Color.adaptive(light: .init(0xFFFFFF), dark: .init(0x000000))

Copy the source and every file it uses:

swift/Blocks/LoginPasskey.swift

import PhosphorSwift
import SwiftUI

public struct LoginPasskey: View {
  enum Status: Sendable {
    case idle, scan, ok, done
  }

  private var onChangeAccount: (() -> Void)?
  private var onUsePassword: (() -> Void)?
  private var onContinue: (() -> Void)?
  @State private var status: Status
  @State private var task: Task<Void, Never>?
  @Environment(\.accessibilityReduceMotion) private var reduceMotion

  public init(

swift/Components/Avatar.swift

import SwiftUI

public enum AvatarSize: CaseIterable, Sendable {
  case sm, `default`, lg, xl

  var dimension: CGFloat {
    switch self {
    case .sm: 24
    case .default: 32
    case .lg: 40
    case .xl: 64
    }
  }

  var overlap: CGFloat {
    self == .xl ? 16 : 8

swift/Components/Button.swift

import SwiftUI

public struct VariantButtonStyle: ButtonStyle {
  public enum Variant: CaseIterable, Sendable {
    case `default`, outline, secondary, tinted, ghost, plain, destructive, link
  }

  public enum Size: CaseIterable, Sendable {
    case `default`, xs, sm, lg, xl, icon, iconXs, iconSm, iconLg, iconXl

    var height: CGFloat {
      switch self {
      case .xs, .iconXs: 24
      case .sm, .iconSm: 32
      case .default, .icon: 36
      case .lg, .iconLg: 44

swift/Components/ButtonGroup.swift

import SwiftUI

extension EnvironmentValues {
  @Entry var buttonGroup: Axis? = nil
  @Entry var buttonGroupSize: CGSize = .zero
}

enum ButtonGroupSpace: Hashable {
  case group
}

struct ButtonGroupFrame {
  let bounds: Anchor<CGRect>
  let outlined: Bool
}

swift/Components/Checkbox.swift

import PhosphorSwift
import SwiftUI

extension Shadow {
  static let control = Shadow(color: .black.opacity(0.08), radius: 0.5, y: 0.5)
  static let thumb = Shadow(color: .black.opacity(0.12), radius: 1.5, y: 1)
}

struct SelectionIndicator<Mark: View>: View {
  let checked: Bool
  let pressed: Bool
  let cornerRadius: CGFloat
  let mark: Mark

  @Environment(\.isEnabled) private var isEnabled
  @Environment(\.isInvalid) private var invalid

swift/Components/Dialog.swift

import SwiftUI

extension View {
  public func dialog<Content: View>(
    isPresented: Binding<Bool>,
    @ViewBuilder content: @escaping () -> Content
  ) -> some View {
    modifier(
      CoverPresenter(isPresented: isPresented) { visible in
        CenteredStage(visible: visible, dismissible: true, content: content)
      }
    )
  }
}

struct CenteredStage<Content: View>: View {

swift/Components/Field.swift

import SwiftUI

extension EnvironmentValues {
  @Entry public var isInvalid = false
  @Entry var fieldInset = false
  @Entry var fieldGroupInset = false
  @Entry var fieldSetInset = false
}

extension View {
  public func invalid(_ isInvalid: Bool = true) -> some View {
    environment(\.isInvalid, isInvalid)
  }
}

public enum FieldOrientation: CaseIterable, Sendable {

swift/Components/Haptics.swift

import SwiftUI

extension EnvironmentValues {
  @Entry public var hapticsEnabled = true
}

extension View {
  public func haptics(_ enabled: Bool) -> some View {
    environment(\.hapticsEnabled, enabled)
  }

  func hapticFeedback<Trigger: Equatable>(_ feedback: SensoryFeedback, trigger: Trigger) -> some View {
    modifier(HapticFeedbackModifier(feedback: feedback, trigger: trigger) { _, _ in true })
  }

  func hapticFeedback<Trigger: Equatable>(

swift/Components/KeyboardScrollView.swift

import SwiftUI
import UIKit

public struct KeyboardScrollView<Content: View>: View {
  let showsIndicators: Bool
  let content: Content

  public init(showsIndicators: Bool = true, @ViewBuilder content: () -> Content) {
    self.showsIndicators = showsIndicators
    self.content = content()
  }

  public var body: some View {
    ScrollView(.vertical, showsIndicators: showsIndicators) {
      content
        .frame(maxWidth: .infinity, alignment: .topLeading)

swift/Components/Overlay.swift

import PhosphorSwift
import Observation
import SwiftUI

public enum PopupAlignment: Sendable, CaseIterable {
  case start, center, end
}

struct OverlayDismiss: Sendable {
  let action: @MainActor @Sendable () -> Void

  @MainActor func callAsFunction() {
    action()
  }
}

swift/Components/Screen.swift

import SwiftUI

extension EnvironmentValues {
  @Entry var screenBackground: Color = .surface
}

public struct Screen<Content: View>: View {
  public enum Background: CaseIterable, Sendable {
    case surface, surfaceSecondary

    var color: Color {
      switch self {
      case .surface: .surface
      case .surfaceSecondary: .surfaceSecondary
      }
    }

swift/Components/Separator.swift

import SwiftUI

public struct Separator: View {
  let orientation: Axis

  public init(_ orientation: Axis = .horizontal) {
    self.orientation = orientation
  }

  public var body: some View {
    Rectangle()
      .fill(Color.separator)
      .frame(width: orientation == .vertical ? 1 : nil, height: orientation == .horizontal ? 1 : nil)
      .frame(maxWidth: orientation == .horizontal ? .infinity : nil, maxHeight: orientation == .vertical ? .infinity : nil)
      .accessibilityHidden(true)
  }

swift/Components/TextVariant.swift

import SwiftUI

public enum TextVariant: CaseIterable, Sendable {
  case `default`, h1, h2, h3, h4, p, blockquote, code, lead, large, small, muted

  var style: TextStyle {
    switch self {
    case .h1: .xl3
    case .h2: .xl2
    case .h3: .xl
    case .h4, .lead, .large: .lg
    case .code, .small, .muted: .sm
    default: .base
    }
  }

Add the files to your app target.

Set minSdk to 24 or higher and add the dependencies:

build.gradle.kts

implementation(platform("androidx.compose:compose-bom:2026.09.00"))
implementation("androidx.compose.foundation:foundation")
implementation("androidx.compose.ui:ui")
implementation("com.adamglin:phosphor-icon-android:1.0.0")

Copy the theme files every view uses:

kotlin/theme/Theme.kt

package com.esuiss.ui.theme

import androidx.compose.foundation.isSystemInDarkTheme
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.Immutable
import androidx.compose.runtime.staticCompositionLocalOf
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.dropShadow
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.Shape
import androidx.compose.ui.graphics.shadow.Shadow as DropShadow
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.style.LineHeightStyle
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.DpOffset

kotlin/theme/Tokens.kt

package com.esuiss.ui.theme

import androidx.compose.runtime.Immutable
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.unit.dp

@Immutable
data class Colors(
    val surface: Color,
    val surfaceSecondary: Color,
    val surfaceTertiary: Color,
    val surfaceRaised: Color,
    val label: Color,
    val labelSecondary: Color,
    val labelTertiary: Color,
    val labelQuaternary: Color,

Copy the source and every file it uses:

kotlin/blocks/LoginPasskey.kt

package com.esuiss.ui.blocks

import androidx.compose.animation.core.Animatable
import androidx.compose.animation.core.CubicBezierEasing
import androidx.compose.animation.core.RepeatMode
import androidx.compose.animation.core.animateFloat
import androidx.compose.animation.core.animateFloatAsState
import androidx.compose.animation.core.infiniteRepeatable
import androidx.compose.animation.core.rememberInfiniteTransition
import androidx.compose.animation.core.tween
import androidx.compose.foundation.background
import androidx.compose.foundation.clickable
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.interaction.collectIsPressedAsState
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box

kotlin/components/Avatar.kt

package com.esuiss.ui.components

import androidx.compose.foundation.Image
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.offset
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.text.BasicText
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.staticCompositionLocalOf
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier

kotlin/components/BottomBar.kt

package com.esuiss.ui.components

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.ColumnScope
import androidx.compose.foundation.layout.WindowInsets
import androidx.compose.foundation.layout.WindowInsetsSides
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.only
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.safeDrawing
import androidx.compose.foundation.layout.windowInsetsPadding
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier

kotlin/components/Button.kt

package com.esuiss.ui.components

import androidx.compose.foundation.background
import androidx.compose.foundation.border
import androidx.compose.foundation.clickable
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.interaction.collectIsPressedAsState
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.RowScope
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.shape.RoundedCornerShape

kotlin/components/ButtonGroup.kt

package com.esuiss.ui.components

import androidx.compose.foundation.background
import androidx.compose.foundation.gestures.Orientation
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.RowScope
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.shape.CornerSize
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.DisposableEffect
import androidx.compose.runtime.Immutable

kotlin/components/Content.kt

package com.esuiss.ui.components

import androidx.compose.runtime.compositionLocalOf
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.dp

val LocalContentStyle = compositionLocalOf { TextStyle.Default }

val LocalContentColor = compositionLocalOf { Color.Unspecified }

val LocalIconSize = compositionLocalOf { 20.dp }

kotlin/components/Dialog.kt

package com.esuiss.ui.components

import androidx.compose.animation.AnimatedVisibility
import androidx.compose.animation.core.MutableTransitionState
import androidx.compose.animation.core.tween
import androidx.compose.animation.fadeIn
import androidx.compose.animation.fadeOut
import androidx.compose.animation.scaleIn
import androidx.compose.animation.scaleOut
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.ColumnScope
import androidx.compose.foundation.layout.WindowInsets
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth

kotlin/components/Icon.kt

package com.esuiss.ui.components

import androidx.compose.foundation.Image
import androidx.compose.foundation.layout.size
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.ColorFilter
import androidx.compose.ui.graphics.takeOrElse
import androidx.compose.ui.graphics.vector.ImageVector
import androidx.compose.ui.unit.Dp
import com.esuiss.ui.theme.EsuissTheme

@Composable
fun Icon(
    imageVector: ImageVector,

kotlin/components/Overlay.kt

package com.esuiss.ui.components

import android.os.Build
import android.view.Window
import android.view.WindowManager
import androidx.compose.animation.AnimatedVisibility
import androidx.compose.animation.AnimatedVisibilityScope
import androidx.compose.animation.EnterExitState
import androidx.compose.animation.core.MutableTransitionState
import androidx.compose.animation.core.animateFloat
import androidx.compose.animation.core.tween
import androidx.compose.animation.fadeIn
import androidx.compose.animation.fadeOut
import androidx.compose.animation.scaleIn
import androidx.compose.animation.scaleOut
import androidx.compose.animation.slideIn

kotlin/components/Screen.kt

package com.esuiss.ui.components

import android.app.Activity
import android.content.Context
import android.content.ContextWrapper
import android.os.Build
import android.view.View
import android.view.Window
import android.view.WindowInsetsController
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.BoxScope
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.ExperimentalLayoutApi
import androidx.compose.foundation.layout.ColumnScope

Update the com.esuiss.ui package names to match your project.

Usage

import { LoginPasskey } from "@/components/blocks/login-passkey"

<LoginPasskey />

Call your passkey API from onContinue, and wire onChangeAccount and onUsePassword to your navigation. The account details and the scan timing are sample values in the component.