Excellently put. Also, just because it didn't generate a facial ID hit, doesn't mean they can't use ReID and track the descriptor vector.

In fact if I were a not-quite ethical user of facerec, I'd flag and bin all vectors and image chips that failed to ID.

I work on facerec and ReID. But it's for deep fake detection and the like, blue team stuff. But the deep ID technologies are very concerning to me in general.