google it, quite a few, and probably many more will be put off by these security 'drones'.
In a previous life I was trained in counter terrorist search (military). I managed to get a 6" blade through security at Baghdad airport (as part of training) and I'd rather be felt up than hi-jacked/blown up any day of the week.
P.S. if you're not being man-handled they're not searching you properly!