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

ShotSpotter microphones are controversial surveillance devices designed to alert authorities to gunshots. But their exact locations have been kept secret from both the public and the police ...

Guardbot is fitted with two surveillance cameras, a batter that can last for 25 hours, microphones and GPS, allowing it to be controlled via satellites as well as remotely. It's currently still in ...