Re: D'oh
This is indeed the point. I feel no need whatsoever to be able to prove who I am. I already know very well who I am, and it's me that defines it, not government.
If there is any practical application of this kind of technology (which I doubt) then it should address a different question, viz am I authorised/qualified/entitled to (do) the thing at hand. This depends in no way at all on my identity.
-A.