“The New York Police Department will begin using scanner technology that can see through a person’s clothes within the year, according to Commissioner Ray Kelly. ‘We’ve been looking at it for several years, looking at it with the Department of Defense, and also Metropolitan Police in London,’ he said on CBS News’ Face the Nation. New technology called Tera-Hertz scanners or T-Ray machines can be used to detect whether a person is carrying a concealed firearm. The new device utilizes T-rays, which pass through fabric and paper, but not cannot pass through metals.”
