1. Student smart device monitoring
- Teachers can induce students' class status and student participation while monitoring the students' screens in real time.

2. Teacher PC screen transfer
- The teacher sends the PC screen to be used in class to all connected students.

3. Bidirectional file transfer
- The teacher can send files to all students, and students can send files to the teacher by dragging and dropping.

4. Writing function
- Teachers and students can write on the current screen or by running the white mode (white color).

5. Control function
- Teachers can control the use of students' smart devices.

6. Group management
- The teacher can designate some students as a group for monitoring and remote control, and can be used for collaborative activities.

Device administrator privileges are used in this app.