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 ...

This is the opposite of what you want for laser microphone which usually targets a reflective surface like a window to pick up latent vibrations from sound inside of a room. Deep Learning ...

A YouTuber recently showcased a homemade laser microphone, a surveillance device capable of picking up sound from a distance ...