Daisy chain enough non-unique ID's together and you get something that's close enough to unique for the purposes of the people who will be implementing this. W

Daisy chain enough non-unique ID's together and you get something that's close enough to unique for the purposes of the people who will be implementing this. While the guy who's getting droned or the dude getting the shit kicked out of him by a bunch of cops may care about identification, the people doing those things don't really care as long as they get the right guy often enough compared to the wrong guy.