Fingerprint reader espresso test

Question

I am trying to make espresso test for fingerprint reading. It is possible for emulator test with such

Runtime.getRuntime().exec("adb -e emu finger touch 1");

However this same code is not working on real devices. What is the way to do fingerprint reader on espresso test for real devices?

Answer 1

I'm sorry but, as far as I know, this is not possible with real devices.