Concerning proof of identity

It's a pretty tough issue but there is a barebones method that a lot of people may not like.

The only solution I see is utilizing cameras & A.I. in publicly accessible locations. These locations should be the social-crypto hot spots.

Proof of identity wouldn't reward you with anything other than privileges on the blockchain (ex: voting) and any other blockchain "bridged" to it.
I don't know if we even have a bridging protocol solidified yet.

There would be an A.I. associated with the blockchain that would do it's best to recognize anyone who attempts to clone their identity.
How do you feel about going to your favorite crypto coffee shop and getting a 360 photo shoot of your face? We could take it a step further and do DNA sampling as well.
This gets into Orwell territory, so the community would have to actively try to erect more of these proof-of-identity public locations.
Public "crypto centers" would also be good for research projects like Gridcoin. Even the hardware would need a proof of origin, but the manufacturing could take place at one of these public centers as well.