Or, Just Use a Mirror...
erco
Posts: 20,259
More technology for technology's sake, but that's what MIT stands for! Certainly of general interest if the Prop 2 can time pulses of 2 picoseconds.
http://idealab.talkingpointsmemo.com/2012/03/mits-laser-camera-can-see-around-corners.php?ref=fpnewsfeed
http://idealab.talkingpointsmemo.com/2012/03/mits-laser-camera-can-see-around-corners.php?ref=fpnewsfeed
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http://cms.web.cern.ch/news/cms-particle-detector
Or a flash bang grenade since that type of situation is usually encountered when searching for suspected criminals.