[stevejones]

Imagine you were to take the example further, unlocking the device required a sequence of fingerprint reads, with a precise ordering. i.e. left-ring finger, right index finger, right little finger, etc... That sequence would be a passcode, just as a precise sequence of keypresses would be. The government can insist on all your fingerprints, but not (in this argument) the correct sequence of uses of those fingerprints to unlock it. If it's only a single finger this same argument could apply.

[33W]

I wonder if we can then reduce this example to a 1-finger sequence. Could a court require you to turn over all of your fingerprints, but not identify the (1 character) sequence?