Researchers Use Radio Waves to "See" Through Walls -- Berardelli 2009 (1015): 2 -- Scie... - 0 views
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Researchers have discovered that an array of radio transceivers--devices that send and receive signals--can track people's movements behind walls. Possible uses include detecting people trapped in burning buildings, controlling lighting or heating and cooling systems as people enter or exit rooms, and spotting burglars or enemy soldiers.
