Some of the checkpoints at my airport are trying this and it's not working. It's making things ever crazier than it already is. This whole put property in the x-ray in a certain order is a new one on me. Wouldn't you need a line monitor to make that work and we don't have them because everyone is too busy running around doing other things. If they really want to make things more efficent I would say get ideas from the people who work the checkpoints instead of someone who has a engineering degree but who has never worked a security checkpoint at an airport.