Fine; I'll just say "Americans are all a bunch of criminals while Belgians are all saints", then.
EVERY study shows theft and loss of items has gone down significantly since these systems have become more widespread. The combination of camera detection (I urge you to try and put something in your bag without scanning it and walk out of one of the big supermarkets if you're ever on a holiday in Belgium - be sure to have the US Embassy's number on speed dial), weight detection, in-store security and magnetic security (yes, like KNOGOs but I've seen them used for items of under €1) functions quite well.
EVERY study shows theft and loss of items has gone down significantly since these systems have become more widespread. The combination of camera detection (I urge you to try and put something in your bag without scanning it and walk out of one of the big supermarkets if you're ever on a holiday in Belgium - be sure to have the US Embassy's number on speed dial), weight detection, in-store security and magnetic security (yes, like KNOGOs but I've seen them used for items of under €1) functions quite well.