Driver's licenses issued in the United States have a number or alphanumeric code issued by the Department of Motor Vehicles (or equivalent), usually show a photograph of the bearer, as well as a copy of his or her signature, the address of his or her primary residence, the type or class of license, restrictions and/or endorsements (if any), the physical characteristics of the bearer (such as height, weight, hair color, eye color, and sometimes even skin color), and birth date. No two driver's license numbers issued by a state are alike. Social Security numbers are becoming less common on driver's licenses, due to identity theft concerns.

The policy looks for a match to the content blade US Drivers Licenses.