content: I wouldn't go that far, but it is disturbing.  The reason I wouldn't go that far is, we've always seen this kind of compelling action take place.  You can be forced to stand for a line up, forced to see if the glove fits or whatever.  From a legal perspective, the only people who TRULY expected a fingerprint to be considered the same as something that you know, as testimony, are people who really find the fingerprint unlock function super convenient, and really like the idea of it being the same as a password legally as well as technically.