[3JPLW]

Even worse: In a number of states, the DL number is deterministic based upon name and DOB.

http://www.highprogrammer.com/alan/numbers/dl_us_shared.html

[ConceptJunkie]

I don't know if it's still the case, but Virginia used to your SSN as an ID. There was an opt-out for that, which I exercised about 25-30 years ago, so I don't know if that policy is still in place.