In this comprehensive review, we solve this dilemma, presenting you the best spy microphones on the market. TL;DR: Key ...

This time he’s made a mini spy bug that records up to nine hours of audio. His first task was ... that would be 8 hours of recording time. Removing the Arduino Pro Mini’s voltage regulator ...

Spy: A modern study of microphone bugs operation and detection talk at 34C3. You can find the slides here, and their white paper here. Focusing their research primarily on FM radio transmitter ...