that Shakes obtained some of the information she discussed in the interview by covertly listening through the walls, with her ear to the wall, to private interactions occurring behind closed doors ...

Here’s a surprisly simple way to build yourself a laser-based listening device. It consists of two modules, a transmitter and a receiver. The transmitter is a set of lasers, one is visible red ...

Listening devices can help evaluate threats and safety levels of people in many situations. A wireless microphone or wireless listening device broadcasts surveillance conversations to a radio ...