[GekkePrutser]

> Isn't it the zoom box that has to be doing the detection? The pc is just sending the signal, which wouldn't take much processing.

If the PC were just sending the signal it wouldn't need the microphone to be on. And it would stop working when people turn off their speakers like a lot of people do in a busy meeting room.

By the way there seem to be other ways to do it too. Not sure if it's Bluetooth but MS Teams warned me in the past that I was in a room with a Surface display (the huge first generation one). It doesn't keep the microphone active though.. I never investigated how it figured that.