The working principle of the camera is that it is sensitive to light, rather than actively emitting light. Just as sunlight shines on a mirror and then reflects off, the reflected light of external light shines on people, is sensitive by a camera, and then undergoes a series of transformations to become videos or pictures. So if the camera is not aimed at people, there will be radiation.
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. Ordinary people can also have video and audio conversations and communicate with each other on the Internet through the camera. In addition, people can also use it for various popular digital images, audio-visual processing and so on.