Comment by cakealert
Such schemes have the fatal flaw that they can be trivially abused. All you need are a couple of stolen/sold identities and bots start proving their humanness and adultness to everyone.
Such schemes have the fatal flaw that they can be trivially abused. All you need are a couple of stolen/sold identities and bots start proving their humanness and adultness to everyone.
Blatant automatic behavior can still be detected, and much more definitive actions can be takes in such a system
> Such schemes have the fatal flaw that they can be trivially abused
I wouldn't expect the abuse rate to be higher than what it is for chip-and-pin debit cards. PKI failure modes are well understood and there are mitigations galore.