http://www.welt.de/wissenschaft/arti...est-durch.html Loosely, the new machines failed in the test environment in HAM. The detectors found pleats in clothing and sweat stains suspicious.

The test due to end in March has been extended until July to permit for more testing with new software. The scanner detects everything from non-metal to sweat stains but the problem is that it cannot discern between dangerous and non-dangerous items, according to the government source quoted in the article.

'Don't trust the machines, just use them to help', says an Israeli safety expert now living in New Jersey.