[philwelch]

You're assuming facial recognition would necessarily be the moral equivalent of "[having] PIs tail everyone all the time in public.". But for that to be the case, facial recognition would have to scan every face it sees, store that face, and then cross-reference every other face it sees against every face it has ever stored.

I'm suggesting a far simpler use case: It scans your face and if you don't match any of the fugitives it's looking for, it forgets about you. I think this use case is far more likely because it's a lot simpler and cheaper to pull off. And that's a big difference.