Yep, these guys know what they are talking about. Its basically a barcode that is attached to your airline ID. If your airline participates, its a quick swipe by the gate agent to verify your employment with said airline and off you go in the jumpseat. Cuts down on all the hand written vouchers from before. Of course, if you work for an airline that everyone hates (like I do), its still up to the captain to say yea or nay if you can go.