"biometrics"

Biometric authentication: Face ID, Touch ID, LAContext, fallback to passcode. Use when implementing app features related to biometrics.

Biometrics

BIOMETRIC AUTHENTICATION (Face ID / Touch ID):

import LocalAuthentication; LAContext().evaluatePolicy(.deviceOwnerAuthenticationWithBiometrics)
Requires NSFaceIDUsageDescription permission (add CONFIG_CHANGES)
Check canEvaluatePolicy first; fall back to passcode if biometrics unavailable
LAContext().biometryType to detect .faceID vs .touchID vs .none
Always provide manual unlock alternative (PIN/password)