You produce your drivers license, VISA, passport, etc... just like you have to have ID to cash a check at a bank.
Every one of the 9/11 hijackers had 6 drivers licenses each from 6 different states With different names addresses and social security numbers on them all.Hell when i was just about to turn 19 i had a drivers license from a state i hadnt been to and still havent to this day that said i was 21 years old and could buy all the booze I wanted from any liquor store I went to.