Interesting development: 
Phoenix airport to test X-ray screening - Yahoo! News:"PHOENIX - Sky Harbor International Airport here will test a new federal screening system that takes X-rays of passenger's bodies to detect concealed explosives and other weapons.
The technology, called backscatter, has been around for several years but has not been widely used in the U.S. as an anti-terrorism tool because of privacy concerns.
The Transportation Security Administration said it has found a way to refine the machine's images so that the normally graphic pictures can be blurred in certain areas while still being effective in detecting bombs and other threats.
The agency is expected to provide more information about the technology later this month but said one machine will be up and running at Sky Harbor's Terminal 4 by Christmas...."
The Transportation Security Administration said it has found a way to refine the machine's images so that the normally graphic pictures can be blurred in certain areas while still being effective in detecting bombs and other threats. ..
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