Get biometrics state from the home widget

Question

Created Aug ’20

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Is it possible to determine if the device has Touch/Face ID from the home widget? And was it enabled.

authError.code equals to kLAErrorBiometryNotAvailable when this code runs from the home widget on the real device. Nevertheless, it works correctly in the Simulator.

Code Block var authError: NSError?
LAContext().canEvaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, error: &authError)

It is a bug or a feature?

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Answer 1

DTS Engineer OP

Apple

Aug ’20

Biometrics are, in general, only rated for use by apps. They are not supported in app extensions.

This applies to both the LocalAuthentication framework and the biometric support within the keychain.

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