If you live in California (and probably many other states) and have a drivers license, or if you've ever crossed a US border and aren't a US citizen, then the g

If you live in California (and probably many other states) and have a drivers license, or if you've ever crossed a US border and aren't a US citizen, then the government already has your fingerprints. Frankly, if a government agent wants your fingerprints, there are much easier ways to do it than trying to get a backdoor placed in a TPM chip. Even _if_ it's something they can do, they sure as heck aren't going to use it routinely -- it would be visible in network traffic, would be sitting there in the source code for anybody to come and discover it with a decompiler, and would destroy Apple's reputation if it ever got out (and you can bet their lawyers would push back when their reputation's on the line).