Comment by herf

Doing this without the parents on board does not work. Kids can lie about their birthdate by a few years. Facial age estimation has error bars of like 5 years and many teens don't have any ID. Younger kids use a parent's phone. Many are not supervised by parents or have parents who are complicit/encouraging in getting them more access. Oh you could be famous! But it is clear that more persistent identifiers online will make anonymity much more difficult for everyone else.