>>1329391>It can be legally forced out of youOnly if your implementation is done by a fucking idiot. iProducts purge the key from the biometric unit randomly every 24 hours, after a few failures, and if you press the button five times. Once the biometric device doesn't have a key, there's no way it can give it up. If your product doesn't do these sensible things then by all means don't use it. Also pic related: you have a very americocentric view of the world, and passwords-being-speech-but-fingerprints-not-being-passwords is a foible of the USA's fifth amendment.
Obviously all security is a tradeoff, but I think you're more likely to have your password observed if you're typing it in all the time, and more likely to have your device taken off you whilst unlocked if it doesn't auto-lock when you're not looking at it.
Biometric auth is a good tradeoff because it makes good security practices like strong passwords, only entering passwords in private, and very short reauthentication windows convenient enough things that you'll actually do them.
