Why Driver's License?

You might wonder why we chose driver's license to identify people. Why not just use your name or your Social Security number? Why do we have to identify people at all?

The problem is that, in our preregistration database, we need a simple way to tell everyone apart. Some event participants have the same name (like father-son pairs), and it doesn't seem too unlikely we'll get two John Smiths showing up someday. And people's names can change due to marriage. Social Security numbers would work, but that is very important personal information that we have no business collecting.

So, short of assigning everyone preregistering for one of our events yet another Personal Id Number as a unique identifier, we decided to use driver's license state and number -- 'cause if you don't have one of those already, you won't be participating anyway.