People can scan (扫描) their faces to unlock their mobile phones and check in at train stations these days. All of these use facial identification technology (人脸识别技术). At Hangzhou No 11 High School in Zhejiang, this technology is being used in new ways. Students can scan their faces to borrow (借) books from the library. They can also buy food at the dining hall by themselves after scanning their faces. These facial recognition systems were set up in May. Many students have enjoyed using the system.