The basic knowledge and the features of QR code are introduced, and then on the basis of the features of the student management in open university, the identity authentication system of open university is designed and realized. In the end, the key technologies applied in the system are introduced emphatically.%通过介绍QR二维码的基本知识及其特点，然后根据开放大学学生管理的特点，设计并实现了开放大学身份验证系统，重点介绍了系统设计中的关键技术。
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