There are databases they can link up to that verify information. Possibly if you have someone else's DL and SSN both you can open an account in their name.

I know that when I opened an account for my wife, it was very shortly after she had gotten her green card and they wanted a lot of information, including copies of her social security card and possibly other documents. I didn't have to send them any of my documents, apparently they were all "in the system."