H. Keith Melton interview on the laser bounce listening device used by the CIA. The CIA’s version used an embedded prism in the target window. If you have access to the target window, you can get a similar result by spraying certain brands of hair spray (AquaNet) on it. When the hair spray dries, it acts as a sort of retro-reflector and is fairly unnoticeable. www.ciaspycraft.com Make your own projects1.gbppr.org Microwave versions (still experimental gear).