The method of positioning the key area of the face has high accuracy and good security. Generally, a dedicated dual camera is adopted, which belongs to the quasi-three-dimensional face recognition technology, and the recognition performance greatly exceeds the two-dimensional face recognition, and the algorithm complexity is much lower than the three-dimensional face recognition. The recognition performance is not affected by ambient light and the reliability is good. You can upload a list of user names and download access control attendance records and photos via a USB flash drive. Device status can be set via TCP/IP network, as well as upload and download information; network communication data is encrypted. Naturalness, the recognition method is the same as the biological characteristics used by humans for individual identification. Completely non-contact, avoiding bacterial infections and making them healthier and healthier. Voice prompt, whether the real voice utters the face image is verified successfully. It can be used independently, and it can complete personnel registration, face attendance, storage record and other functions without connecting to a computer.