One of the most frequent questions we’re asked is “what’s a proximity sensor? what is it used for in a smartphone?”. If I’m in the right mood I generally answer that, if you put your device on the windshield of your car, it will help you mantaining a safe distance from the preceeding car.

Obviously I immediately say I’m just joking, because I don’t want anyone’s life on my coscience. Nonetheless technically a car proximity sensor works just the same as the one in your phone.