[Expansion! ] The correct way to detect pinhole camera] The correct way to detect pinhole camera (1) Traditional cameras, at night to dim the light, it will have infrared fill light. After turning off the lights in the room and closing the curtains, under a hypothetical condition equivalent to a dark room, if you take a mobile phone to shoot, it may have a red dot, which may be the presence of a camera. Or take a strong light to shoot, the lens will reflect, may be the presence of the camera. (2) In the face of the new camera, use the mobile phone software of secretly photographed detection to detect the camera: detect whether there is a camera under Wi-Fi conditions, and one-click detection after being connected to Wi-Fi can detect whether there is a camera in the same Wi-Fi network environment.
Source: CCTV.com Kuaikan Weibo