If this gets to the next level (I’m sure it will) I imagine the media will run with the “no ages stamped on faces” concept.
But if Joe Schmoe gets picked up by the FBI because he has stuff on his computer, I don’t think there are birth certificates with the pictures. I think the cops can still say “That’s a 10-year-old” and it’s not a strong criminal defense to say “You don’t know that!!!”
Chinese 12 year old girls can look 7 or 8 y.o. to an American who doesn’t know a lot of Chinese people. That is less and less so as nutrition levels rise but is still true in much of the countryside.