The Swipe Toolkit, which allows you to decode your own license barcode, and see what information is currently available on it and you (and the value of said info to marketing entities).
And guess what? Many states are considering updating to "smart cards", containing our dear old friend, the RFID chip, so that the license need not even be swiped to be read. This, when driver's licenses in general are slowly sliding into use as National ID cards...which would make identity theft even easier.
These folks are designing an RFID chip for implantation under your skin.
Fscking creepy, I tell ya.