Pai Chai University with a smart electronic attendance app offers the following features: 1. Automatic Attendance Attendance check and change the results 2. Phone Registration (Registration Bluetooth feature phone users) 3. Android, iPhone, iPad available 4. Attendance check when using Bluetooth 5. Sending and receiving a message (Professor - Student interaction) 6. Install the App Status 7. QR code identification (library access, auto loan return books, reading room seating applications) 8. Fo