local_auth_watchos 0.0.1

watchOS implementation of the local_auth plugin, authenticating the wearer with the device passcode through LocalAuthentication via dart:ffi.

local_auth_watchos

The watchOS implementation of local_auth.

Backed by LocalAuthentication (LAContext, available on watchOS 9+) over dart:ffi. evaluatePolicy is asynchronous, so the native side caches the result and the Dart side polls it.

Scaffolded by flutter-watchos plugin port from local_auth_darwin, then implemented and verified by hand.

Usage

This is a federated plugin implementation. Apps that already depend on local_auth and target watchOS only need to add this package alongside it:

dependencies:
  local_auth: ^<latest>
  local_auth_watchos: ^0.0.1

The plugin registers automatically via Flutter's federated registry — no explicit imports required from app code.

Behaviour on watchOS

The watch has no Face ID / Touch ID, so only device-owner authentication (passcode / wrist unlock) is offered:

Method	watchOS
authenticate (device-owner)	supported (watchOS 9+)
authenticate with biometricOnly: true	fails (no biometry)
deviceSupportsBiometrics	always false
getEnrolledBiometrics	always empty
isDeviceSupported	true when a passcode is set
stopAuthentication	supported

Status

Platform	Implemented
Apple Watch (watchos)	yes (device-owner auth, watchOS 9+)
Watch simulator (watchsimulator)	query methods verified; interactive auth needs a device

The query methods are verified on the simulator (example/integration_test); the interactive passcode prompt is verified on a physical Apple Watch.

License

The FlutterWatch Authors under a BSD-3-Clause license. See LICENSE for the full text.