This doesn't seem surprising to me considering Forced fingerprinting, photographing and measuring has been part of the law for some time and held up in the supr

This doesn't seem surprising to me considering Forced fingerprinting, photographing and measuring has been part of the law for some time and held up in the supreme court. Even forced DNA samples and I believe blood samples are allowed. My understanding is that those things are not considered testimony unlike forced password production. A related distinction is made between being forced to surrender a key to a safe vs the combination to the safe. One is physical the other is testimony.