Anonymous ID: b9a367 Aug. 18, 2018, 2:45 p.m. No.2659423   🗄️.is 🔗kun   >>9438

A Laser Bounce Listening System (LBLS) is a surveillance device that is used for listening private discussions from a far-off distance. It uses a laser beam to detect sound vibrations from a nearby reflecting surface and returns to a receiver that converts the beam to an audio signal. LBLS is designed to allow eavesdropping with a minimal chance of exposure. LBLS can be an effective gadget against terrorism and can be used by intelligence agencies as a spying tool for the places where it is difficult to reach. Keywords – laser, eavesdropping, sound vibrations, spying tool

 

https://www.researchgate.net/publication/312595159_Laser_Bounce_Listening_System_LBLS