How do parents who eat at school receive consumption information?

Schools can install face recognition systems to sell rice.

If a face recognition system is installed in the school canteen, teachers and students can eat in the canteen. After selecting the dishes, just aim at a "face brush" with face recognition function in the dining window, and the diner's name, set meal type and meal amount will automatically appear on the screen. Click OK to complete the payment. At the same time, the dining teacher or the parents of the students will receive a text message on their mobile phones. Students avoid queuing congestion caused by long meal selection time, and do not have to worry about frequent recharge and loss of meal cards. Parents can also learn about their children's meals and nutritional intake at school for the first time.