As explained, it’s not even quite user identification, but rather verification of a unique individual. The ability to identify that an account is held by a unique person (as opposed to possibility being one of many puppet accounts) is pretty useful, particularly if it’s not possible to backtrace it to an otherwise identifiable person.
Even so, the problem I see with this system is that a person has to be careful to never, ever, ever associate their unique ID with themselves, though there will be constant pressure to do so.
As explained, it’s not even quite user identification, but rather verification of a unique individual. The ability to identify that an account is held by a unique person (as opposed to possibility being one of many puppet accounts) is pretty useful, particularly if it’s not possible to backtrace it to an otherwise identifiable person.
Even so, the problem I see with this system is that a person has to be careful to never, ever, ever associate their unique ID with themselves, though there will be constant pressure to do so.