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March 9, 2008 12:30 PM PDT
Britain makes camera that 'sees' under clothes
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An airport scanner for the home
August 13, 2007
The T5000 camera, created by a company called ThruVision, uses what it calls "passive imaging technology" to identify objects by the natural electromagnetic rays--known as Terahertz or T-rays--that they emit.
The high-powered camera can detect hidden objects from up to 80 feet away and is effective even when people are moving. It does not reveal physical body details and the screening is harmless, the company says.
The technology, which has military and civilian applications and could be used in crowded airports, shopping malls or sporting events, will be unveiled at a scientific development exhibition sponsored by Britain's Home Office on Wednesday and Thursday.
"Acts of terrorism have shaken the world in recent years and security precautions have been tightened globally," said Clive Beattie, the chief executive of ThruVision. "The ability to see both metallic and nonmetallic items on people out to 25 meters is certainly a key capability that will enhance any comprehensive security system."
While the technology may enhance detection, it may also increase concerns that Britain is becoming a surveillance society, with hundreds of thousands of closed-circuit television cameras already monitoring people countrywide every day.
ThruVision came up with the technology for the T5000 in collaboration with the European Space Agency and from studying research by astronomers into dying stars.
The technology works on the basis that all people and objects emit low levels of electromagnetic radiation. Terahertz rays lie somewhere between infrared and microwaves on the electromagnetic spectrum and travel through clouds and walls.
Depending on the material, the signature of the wave is different, so that explosives can be distinguished from a block of clay and cocaine is different from a bag of flour.
Story Copyright © 2008 Reuters Limited. All rights reserved.
And I have to say again: any items can be easily concealed from it, by a layer of substance with the same temperature and absorbtion as human body. Read: warm beef steak.