A recently introduced feature for iPhones and AirPods called "Live Listen" is going viral. It enables a person to use an iPhone's microphone to listen in to conversations wirelessly through AirPods.
This tutorial wont be the most practical recording setup you have ever used, but it is an interesting bit of science and a great DIY project. It is a simple laser listening device that will allow you ...
Laser microphones have been around since the Cold War. Back in those days, they were a favorite tool of the KGB – allowing spies to listen in on what was being said in a room from a safe distance.
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