>it is significantly harder to be forced to use a password that exists only in your mind That's debatable, but it's also significantly easier to steal or guess

>it is significantly harder to be forced to use a password that exists only in your mind That's debatable, but it's also significantly easier to steal or guess a password than it is to steal or guess a fingerprint. The evidence for that is how many password breeches we've had over the years compared to the number of fingerprint breeches. But it doesn't matter because it's trivial to put a gun to someone's head and force them to give up their password. As soon as you're open to using physical force, there's not much you can't do.