Facial recognition software is a big load of bull shit. Optical Character Recognition software has made strides in the past decade but even it is not all that reliable. If software has issues reading computer generated text what are the chances Facial Recognition software is any where close to being accurate?
If the big casinos are not implementing this type of software to spot known card counters, cheats and criminals then it is a safe bet it does not work. Of course it is good enough for government. What a bunch of idiots.