I want to write some code to detect when someone touches the DEVICE’S fingerprint sensor. In other words, I want to capture the attempt to log into the device from the Fingerprint Sensor.

I can find examples of using
Biometrics* classes
in Android applications. That’s not what I want.

I hope someone can point me in the right direction.

I’d prefer the example using Dart, but I really just need the algorithm.