Originally Posted by
FL2009
So here we are, what, 9 years after 9-11, can't some of these airports figure out some door system or something so people can't walk thru backwards and eliminate this "job"?
It's not that complicated. I know lots of airports (BRU and BCN come to mind) where you have to go through a double set of automatic doors to leave the secure area. They are just wide enough for one person. If anyone tries to pass them in the wrong direction an alarm sounds. (And the doors stay closed.)
And yes, this type of doors existed already pre-9-11.