Attendance system used by school, college, university by using NFC in android-powered device. The application consist of two part; client and host. The student simply tap their android device to the teacher/lecturer android device to sign in their attendance. The application can generate report on PDF of who attend the class and calculate percentage of attendance. The start of app should prompt the lecturer what class it is before the student can start tapping. On the student side, the app will prompt student detail such as name but it will only prompt on first-time-run. This is to avoid the student from changing the detail to other student detail just to help them skipping class.