Bank finance swipe face to apply for card, remote loan, independent account opening, swipe face to pay & middot& middot;& middot;& middot;& middot;& middot; With the development of face recognition technology in the financial industry, more and more commercial applications have emerged. Not only emerging Internet financial institutions such as ant financial services and Weizhong bank, but also traditional financial institutions such as state-owned commercial banks, securities and insurance have deployed face recognition technology. Basically, face recognition technology has three application directions in the financial field: self-service terminal, counter system, mobile finance and marketing. The application of public security face recognition in the field of public security focuses on the registration and management of illegal persons, network pursuit, comparison and verification and post-processing. At the same time, portrait comparison can also be used in criminal investigation, maintaining social stability and other businesses. The face recognition photo comparison system is used for rapid identity identification to find and retrieve the identity of specific personnel in a large number of databases. It makes full use of very valuable face photo clues, greatly speeds up the identification process of suspects by public security investigators, and provides effective technical means to accelerate the process of strengthening the police through science and technology and form a high-intelligent, socialized and large-scale public security prevention system. With the acceleration of the pace of urban life and the continuous improvement of living standards, aircraft and railway safety have attracted more and more attention. Nowadays, many airports have begun to use HD face certificate comparison system to assist in airport manual inspection. When the passenger is ready to enter the waiting hall, the camera at the security checkpoint will automatically capture the face image, and the face recognition system will automatically compare the passenger's ID photo with it to identify the passenger's identity. When it is found that the certificate information is inconsistent with the holder, the system will automatically prompt the security personnel to strengthen manual verification. The face images collected by the face recognition system can also be recorded as very important monitoring data, stored in the database as an index for post retrieval, or connected with the database of public security and security departments for evidence collection and identification.