We didn't have a clue what it was until the TSA agent told us to go into a certain line and not to take off our shoes. From then on we looked for it and the lines were much shorter. Like I said before we don't travel that much so for us it wouldn't be worth paying the money and when we book we always allow plenty of time. I guess the best part of the whole thing is that we didn't have to take off our shoes. My feet are further down there than when I was little and the old body doesn't bend quite like it used to. <img src="http://www.traveltalkonline.com/forums/images/graemlins/Grin.gif" alt="" /> I would rather spend time at the gate instead of in line. Maybe I would even shop in one of the airport stores. <img src="http://www.traveltalkonline.com/forums/images/graemlins/Wink.gif" alt="" />