Re: I'll bet there are lots of lawyers salivating
Presumably the system would alert an officer that the person stood on the corner resembles wanted bad guy Joe Blogs, and then show the officer a mugshot of Blogs from the records. The human officer would be the entity making the decision to question the person on the corner. In this respect using an automated facial recognition system doesn't change anything legally.
I'm assuming that it is currently legitimate for an officer to talk to someone resembling a known wanted criminal based on a photograph or other image.
Where the lawyers might get some business is if this nVidia system, through a fault or bad data, causes an innocent person to be questioned ten times a day.