Blogger exposes loophole in $1billion fleet
Yes the blogger has a simple way of by pass the scanner. If there is a machine, there will be people who can cheat it. I do believe that it will be simple to fix this problem (use a background made of PORK lol), however it will still be ways to cheat it.
I am sure someone at TSA has thought of this before, but they all got bought off by the company who sale scanners.