The correct way to detect pinhole cameras ① Traditional cameras will dim the light at night, and there will be infrared fill light. Turn off the lights in the room and close the curtains. If you shoot in an imaginary darkroom with a mobile phone, it may have a red dot or a camera. Or take strong light to shoot, the lens will reflect light, and the existing camera may shoot it. (2) Facing the new camera, use the mobile phone software of sneak shot detection to detect the camera: in the case of Wi-Fi, detect whether there is a camera, and after connecting Wi-Fi, one-click detection can detect whether there is a camera in the same Wi-Fi network environment.
Camera or webcam, also known as computer camera, computer eye, electronic eye, etc. , a video input device, is widely used in video conferencing, telemedicine and real-time monitoring.
Webcam generally has the basic functions of video shooting/transmission and still image shooting. After the image is captured by the lens, it is processed by the photosensitive element circuit and control element in the camera and converted into a digital signal that can be recognized by the computer, and then input into the computer through the parallel port or USB connection, and then the image is restored by software.