We have had IR cameras and laser mics for a long time. http://en.wikipedia.org/wiki/Laser_microphone http://en.wikipedia.org/wiki/Laser_microphone (if you don'

We have had IR cameras and laser mics for a long time. http://en.wikipedia.org/wiki/Laser_microphone http://en.wikipedia.org/wiki/Laser_microphone (if you don't know what they are)