|Giving up keys about information otherwise already known to be on the computer is what's declared non-testimonial though. That was true of In Re Boucher and t

|Giving up keys about information otherwise already known to be on the computer is what's declared non-testimonial though. That was true of In Re Boucher and to a similar extent US v Kirschner, but in US v. Fricosu, the agents had not seen the contents of the computer, as the defendant claimed she couldn't remember the password. Obviously PC still has to exist that the thing to be found will be found on the computer, but in Fiscosu it was.