Yeongnam University Smart Attendance app.
* Setting function
1. Select the Settings menu with the gear wheel in the upper left corner of the menu
  end. Notification settings
  I. Bluetooth auto-shutdown setting
* main function
1. Attendance check using Bluetooth
2. View the status of attendance
3. View the attendance status by subject
4. Appeal Appeal
5. Timetable inquiry
6. Weekly schedule
7. Register error / feature enhancements
8. In-house restaurant menu inquiry
9. Help