One possibility for using biometric data is enabling passwordless sign-ins.
No, in both android and ios biometric data is never given to the app for touchid/faceid. It just notifies the app if the authentication passed/failed. So they would never need biometric data to enable biometric authentication.
No, in both android and ios biometric data is never given to the app for touchid/faceid. It just notifies the app if the authentication passed/failed. So they would never need biometric data to enable biometric authentication.