In recent years, the application scope of face recognition has become more and more extensive, such as ordering and paying, entering and exiting the community, handling business, etc. Paying by face has become a new model and integrated into people's lives.

n recent years, with the continuous development of science and technology and the continuous explosion in the field of artificial intelligence, biometric technology has reached its peak application and has gradually entered the daily life of the public. The technology has also developed rapidly to a certain extent. In the field of biometric technology, in addition to the well-known fingerprint recognition and face recognition,palmVein recognition is a technology that is unfamiliar to the public，It is also developing steadily and slowly entering the public eye.

When the catering industry is undergoing digital reform, the focus of society's focus on catering reform is on market-oriented public restaurants, but the catering format of canteens in enterprises and institutions has been ignored.in today's internet +In the context of the rapid development of the times, how to adapt to the development and transform the traditional canteens of enterprises and institutions into an Internet-enabled canteen? +Smart canteens improve user experience and complete the transformation and upgrading from traditional canteens to smart canteens.