I played with AWS rekog, I agree that it is remarkable, but even with a 98 threshold you get occasionally some false positives (but rare), and often some false

I played with AWS rekog, I agree that it is remarkable, but even with a 98 threshold you get occasionally some false positives (but rare), and often some false negatives (I didn't count but I'd say of the magnitude of 0.1-0.5%). That would mean that several days in the year you can't get in because the system mis identifies you.