I do agree that i could use anything (email, phone etc.) to login in those services but this "something" would be still mapped/tied to my real identity (in a pr

I do agree that i could use anything (email, phone etc.) to login in those services but this "something" would be still mapped/tied to my real identity (in a previously validated way). So if it is the first time i am using DMV online service, i can login using my real identity because that is much easier than going to real world location and getting my account credentials.