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In my project I have to generate a dynamic but deterministic string using device specific info/parameters which never change in the lifetime of the device, even after the Firmware or OS upgrade. E.g. Serial number, processor doesn't change, but what all other possible device info/parameters could be?

Gaurav
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    A custom ROM can return altered values for pretty much anything, including any "serial number". – CommonsWare Nov 09 '15 at 23:47
  • If custom ROM is flashed then device is wiped and that is fine as per my requirement. I saw in the blog that MAC address may not be available in all the devices when wifi or data is off. http://android-developers.blogspot.com/2011/03/identifying-app-installations.html – Gaurav Nov 10 '15 at 00:26
  • Possible duplicate of [Is there a unique Android device ID?](http://stackoverflow.com/questions/2785485/is-there-a-unique-android-device-id) – GreyBeardedGeek Nov 10 '15 at 00:46

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