通过指纹采集器采集学生指纹，并与数据库中的指纹信息进行匹配，从而达到签到的目的。当然这里面还有学生、教师、课程信息的管理模块-Student fingerprint, fingerprint scanner acquisition and matching fingerprint information database, attendance so as to achieve the purpose. Of course there is also the students, teachers