The back of the camera or the bottom of the camera. According to the sales information on Mercury's official website, we learned that the Mercury security camera's reset button is on the back of the camera or at the bottom of the camera. There is a reset button with a reset logo next to it. A camera, also known as a computer camera, computer eye, electronic eye, etc., is a video input device that is widely used in video conferencing, telemedicine, and real-time monitoring.