You might unlock your phone 10,000 or 100,000 times over its lifetime. It is just a hugely convenient thing to have that work as quickly as possible, without ne

You might unlock your phone 10,000 or 100,000 times over its lifetime. It is just a hugely convenient thing to have that work as quickly as possible, without needing to enter a passcode every time. How likely is it that you will experience an unexpected breach of your 4th amendment rights where you don't have time to disable biometric access to your phone in advance, especially as the iPhone has a 'panic button' specifically to do this quickly. Face ID requires you to look at the phone anyway so in theory it's simple to avoid giving access to a cop.