- January 13, 2016
Designed to defeat wired microphones inside walls, contact microphones, audio transmitters located in AC outlets, and laser/microwave reflections from windows. Some masking systems inject noise into the environment…causing conversations to have to be raised. Counter Intelligence Services suggests using systems that injects noise into the environment perimeter and not directly into the environment. This approach allows normal conversation while still defeating eavesdropping devices that rely on acoustic leakage.