weird decision by Aussies
replacing a sensor that generates a mathematical representation of a fingerprint is playing with fire. You don't know the new sensor doesn't generate the same representation for all fingerprints or for some spy agency standard artificial fingerprint or even uses an algorithm that is similar to Apple's. Non-approved means non-known. this is not just an apple issue... it applies to all sensors used for security.
description of what it does for laymen, because some of these comments show ignorance https://support.apple.com/en-us/HT204587