If researchers at the Georgia Institute of Technology have their
way, law enforcement officials will soon detect terrorists, kidnappers, and
other bad boys through walls and doors with a new radar flashlight.
The radar device sends out electromagnetic energy and then detects a return signal that indicates the presence of persons from their breathing. Results are displayed as bar graphs on a display, which rise and fall in rhythmic response to respiration of the person on the other side of the wall.
The device works through brick, wood, plasterboard, glass, and concrete walls up to eight inches thick, and at distances of up to approximately 10 ft. The Georgia Institute of Technology filed a patent for the device.
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