You can't. During the study, you need to install a camera. Therefore, the network training system of three new technologies cannot be separated from the camera. During the training, the system will prompt you to upload photos or the system will automatically capture them. In order to protect your privacy, please be sure to wear formal clothes to study. The system doesn't receive videos, so chapter learning is invalid, and the video comparison with the photo of registration information that is not my own learning is invalid, so it is not allowed to take the place of learning.