I understand the Android/iOS biometric subsystems are not designed for exposing 'finger print ids' outside of their proprietary internal APIs used for unlocking the device, etc.
However, can the sensor itself be used to collect finger print data to send to a third party source, e.g. used as a basic sensor?
As per my understanding it should not, actually it will not work (Android and iOS both) as basic sensor to collect data and send out of device.
It is against the security policies and which I think any OS will not allow.
Hope it will help.