Perfect unique_id for device except IMEI,Android_ID,WLAN Mac and Bluetooth address

Question

Objective:

I am looking for a way to find out a unique_id for android device.

Background:

I will use the Id in login re

Answer 1

I have chosen to use Android_ID since It's not dependent on any hardware.

Build.SERIAL also dependent on availability of telephony that is in wifi only devices this Build.SERIAL won't work.

I have explained how other approaches are dependent upon the hardware availability in the question itself.