The story (from Europe) says:
Although use of the scanners remains optional, every passenger must now also be patted down and pass through a metal detector, whether or not they have been scanned.
It’s optional and you get a pat down and have to go through the metal detector either way-Why would you go through it then? Is it like a horsey ride at the grocery store ?
‘Naked’ scanners fooled by creased clothing
Published: 16 Nov 10
Controversial “naked” body scanners currently being tested at Hamburg’s airport are constantly malfunctioning due to folds in passengers’ clothing, broadcaster NDR reported on Tuesday.
The public radio station said the trial of the body imaging security scanners has been plagued by serious problems. The units, which have been in use since September, are apparently unable to tell the difference between foreign objects and such things like pleated clothing.
The scanners use millimetre-wave technology to produce outline images of bodies, with each scan lasting less than three seconds.
While some passengers are being asked to remove thicker clothes such as jumpers, NDR reported that the devices are regularly malfunctioning due to creases in lighter clothes such as blouses and skirts.