Sky Harbor Airport in Phoenix is about to become the first one in the country to test a controversial new federal screening system.
A technology called backscatter takes close-up X-rays of the human body in an effort to find concealed explosives and other weapons.
The backscatter has been around for several years but has not been widely used in the U-S because it's been viewed as a violation of privacy.
But the Transportation Security Administration says it's found a way to refine the machine's images.
The TSA claims that normally graphic pictures can be blurred in certain areas while still being effective in detecting bombs and other threats.
A Sky Harbor deputy aviation director says they've been assured that passenger privacy will be protected.
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