of a September 2006 report by the National Governors Association,  the National Conference of State Legislatures, and the American Association of Motor Vehicle Administrators provides the following explanation. The DD has its genesis in the 2005 federal Real ID Act. Please note that the document discriminator does not include the driver’s license number. Accordingly, it serves to thwart people who wish to tamper with, counterfeit or duplicate a government document.
It, thus, uniquely identifies each card for a given individual. The DD is a security code that identifies where and when the license was issued. A number of states started adding this piece of information to their driver’s licenses several years ago. Please see What does the DD on a Michigan driver’s license mean? DD = Document DiscriminatorĭD is an abbreviation for Document Discriminator. I first presented this information in a Quora answer that I wrote last month. However, I find this tidbit of information so interesting that I feel compelled to write about it. This post about the so-called Document Discriminatoron driver’s licenses is somewhat off-topic for this blog.
