It's not possible to prove the user is anything ever. It probably never will be. Likely what will happen instead is that the person in the ID will become personally liable for accounts verified with that ID. Which is even more reason to reject ID verification.
reply> Likely what will happen instead is that the person in the ID will become personally liable for accounts verified with that ID.
replyExactly. Which in turn requires you to have some way of tying those accounts to that ID, which was supposed to be the thing to be prevented.