How to identify change on biometric TouchID/FaceID

how to identify if there is any change on touchid/faceid

Scenario 1: if device is stolen somone else try to use device

Sceneraio 2: if user changes biometric by themselves

How can we idenfity difference between such scenarios?

Replies

Scenario 1: if device is stolen somone else try to use device

I don’t understand what you’re looking for here. If an attacker is trying to use the device via biometrics, their attack will either succeed or fail. Either way, it’s indistinguishable from the expected using either suceeding or failing to authenticate with their biometrics.

Sceneraio 2: if user changes biometric by themselves

Check out

kSecAccessControlBiometryCurrentSet
.

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