The C712 electronic class board with facial recognition supports touch button input and touch operation. It adopts under-screen card brushing technology, built-in dual speakers, supports voice instructions, supports ISO14443A/B standard 13.56M cards, and uses infrared and visible light dual-lens 200W pixel cameras. It supports offline recognition of up to 20,000 faces. It can be applied in four scenarios: educational management and attendance, meeting check-in, administrative attendance, and welcoming new students.