[pwnna]

Yes. Identity is an intrinsic property of a person. However, how would you design a system to check this property? It's a very difficult property to measure. Having someone vouching for it is a relatively safe and easy way to do this.

[drdaeman]

As usual, with credentials.

It's just that credential must be something you can handle by yourself and not require a third party to provide to you. A third party may assert some aspect of your identity by providing a statement that the person who's in possession of the certain credentials has been verified by this notary to indeed have certain properties. But if me and some website are starting to become acquainted why do we need any third party as a strong requirement? When I walk into some office I don't have to show my passport, I just introduce myself and we get to the business. And then, if there's a necessity (!), business owner may ask me to provide some assertions of my identity. I don't see any reason it shouldn't work in a same manner on the web. Like, for example, "Hey there, you may call me Aleksey and here's my, say, public key so you could authenticate me at a later time."

[wodenokoto]

Remembering your face is what a cookie can do for you. You log-in via a trusted 3rd party (that may be owned by you) and you receive a cook for use next time.

If you change your face the next time you walk in, like say you visit from your iPhone instead of you PC, they cant recognize you and will of course need strong verification, after which you may receive a cooking.

[drdaeman]

This is a workaround. A completely different topic.

My issue with Persona is about its very concepts, not some particular implementation issues.