Security scanners which can see through passengers' clothing and reveal details of their body underneath are being installed in 10 US airports, the US Transportation Security Administration says.
A random selection of travellers getting ready to board airplanes in Washington, New York's Kennedy, Los Angeles and other key hubs will be shut in the glass booths while a three-dimensional image is made of their body beneath their clothes.
The booths close around the passenger and emit "millimetre waves" that go through cloth to identify metal, plastics, ceramics, chemical materials and explosives, according to the TSA.
While it allows the security screeners - looking at the images in a separate room - to clearly see the passenger's sexual organs as well as other details of their bodies, the passenger's face is blurred, TSA said in a statement on its website.
The scan only takes seconds and is to replace the physical pat-downs of people that is currently widespread in airports.
TSA began introducing the body scanners in airports in April, first in the Phoenix, Arizona terminal.
The installation is picking up this month, with machines in place or planned for airports in Washington (Reagan National and Baltimore-Washington International), Dallas, Las Vegas, Albuquerque, Miami and Detroit.
But the new machines have provoked worries among passengers and rights activists.
"People have no idea how graphic the images are," Barry Steinhardt, director of the technology and liberty program at the American Civil Liberties Union, told AFP.
The ACLU said in a statement that passengers expecting privacy underneath their clothing "should not be required to display highly personal details of their bodies such as evidence of mastectomies, colostomy appliances, penile implants, catheter tubes and the size of their breasts or genitals as a pre-requisite to boarding a plane."
Besides masking their faces, the TSA says on its website, the images made "will not be printed stored or transmitted".
"Once the transportation security officer has viewed the image and resolved anomalies, the image is erased from the screen permanently. The officer is unable to print, export, store or transmit the image."
Lara Uselding, a TSA spokeswoman, added that passengers are not obliged to accept the new machines.
"The passengers can choose between the body imaging and the pat-down," she told AFP.
TSA foresees 30 of the machines installed across the country by the end of 2008. In Europe, Amsterdam's Schipol airport is already using the scanners.
Despite the promise of images not being stored or transmitted, they WILL be available on the internet. Don't forget this is all in the name to stamp out terrorism. Our civil liberties WILL be lost to the terrorists in power, for our own protection of course. This WILL also happen in Australia.
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