What does it mean to brush your face and eat in high school?

A high school in Hangzhou promotes "brushing your face to eat": the meal card is useless in an instant.

Hangzhou No.11 Middle School recently launched a set of "Brush Face for Eating" system. Students only need to stand in front of the machine for a while, and their identity information will be recognized. Information such as name, meal card balance and package type will be displayed on the screen. After clicking the "OK" button, they can check out and get their meals.

The students in this school proudly say:

Alipay has to brush his face with his mobile phone, while our school canteen only needs to brush his face.

It is understood that the "face-brushing and eating" system deployed by Hangzhou No.11 Middle School belongs to version 3.0 of the smart canteen. Before version 2.0, you can order and pay through WeChat, but you still need to swipe your card when you pick up the meal. 3.0 After the system is enabled, students only need to brush their faces and no longer need to bring cards.

The vice president of the school said that the reason why the system of "brushing face to eat" was introduced was because there were always students who forgot to bring their meal cards when eating. On average, about 50 students forget to bring their meal cards every day. The most exaggerated student actually lost three meal cards in one semester.

In addition to the function of "brushing face to eat", the intelligent canteen system can also send a student nutrition report to parents once a week according to the students' diet.