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.

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overfeed 6 days ago | parent | next [-]

> 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.

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Almondsetat 6 days ago | parent | prev [-]

Blatant automatic behavior can still be detected, and much more definitive actions can be takes in such a system

	▲	palata 6 days ago \| parent [-]
		Detecting is a thing, but how do you identify the origin if it was done in a privacy-preserving manner? The whole point was that you couldn't, right?