Attendance system: used by students to attend attendance. Every time they enter and leave the campus, they will receive SMS and WeChat notifications and push them by taking photos in and out of the campus.
Video monitoring: install cameras in every classroom and public area to monitor students' school situation in real time.
Telephone system: At present, students are not allowed to bring telephones into the campus, so the school has installed public telephones. Public telephones can only dial predetermined numbers, and students can dial with campus cards.
For a more detailed understanding, you can find Guangzhou Hongtu Education.