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ChallengesBiometric Auth

#066IntermediateMobile

4-6 hours

Biometric Auth

Implement biometric authentication with Face ID and fingerprint support, fallback PIN, secure token storage, and auto-lock with configurable timeout.

biometricsauthsecurityface-id

Objectives

Detect available biometric capabilities
Implement Face ID / fingerprint authentication
Build a fallback PIN entry screen
Store auth tokens securely in keychain/keystore
Add auto-lock with configurable timeout

Hints

expo-local-authentication for biometrics
expo-secure-store for secure token storage
Check biometric availability before showing option