Bruce Schneier rounds up a series of links about problems with airport full-body "pornoscanners." The German police call them "useless" (35 percent of fliers repeatedly set them off, though they weren't carrying anything dangerous), some scanners are set off by sweaty armpits, and the European Parliament requires EU aviation authorities to allow you to opt out of full body scans (both UK and Dutch airports have a "get scanned or don't fly" requirement for people pulled for full-body scans). Here a bit from the Agence France Presse:
The report said the machines were confused by several layers of clothing, boots, zip fasteners and even pleats, while in 10 percent of cases the passenger's posture set them off.
The police called for the scanners to be made less sensitive to movements and certain types of clothing and the software to be improved. They also said the US manufacturer L3 Communications should make them work faster.
In the wake of the 10-month trial which began on September 27 last year, German federal police see no interest in carrying out any more tests with the scanners until new more effective models become available, Welt am Sonntag said.