A company called ThruVision has developed a new security camera that can see through clothing. The camera may be the next big thing protecting our train stations, airports and public areas. The camera doesn’t allow a real image of the person in the camera, so those uncomfortable about being seen naked need not worry.
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The camera is bases on terahertz radiation, or T-ray and is totally passive. The camera detects T-rays coming through clothing, paper, ceramics, and wood. However, T-rays are blocked by water and metal.
The camera can see if an area of a person for example is putting out less T-rays than the surrounding body, indicating a hidden object under the clothes. This version of the camera, unlike earlier versions can be used inside and outside.
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Via BBC News