Identity Uniqueness Problem - Can openid solve it?

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Identity Uniqueness Problem

 

In real world, there are people who’s name is same. But, in online, they
have been required unique identifier always.

It has been required because of two-way communication, ex) email.

 

Now, as you know, spam makes email useless. This lead URL based Identifier -
openid, xri.

But, why they keep “Identity Uniqueness” still ? The namespace of opened,
xri is enormous, but the namespace that people really want is so small.

After last decade - internet boom - , lets say it first internet
generation, nobody can get id what he really want in yahoo, ebay…

You know, then how people make id - his name plus his birth year, phone
number, birth date , etc..

After second internet generation, what will happen?

 

I think openid and xri also have same problem.

 

I think that

Identifier should be one which he/she really want.

Identifier can be modified as his/her wish.

Identifier should not be unique.

 

How do you think about that?

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