AN, T.; LONG, L.; NHI, V.; THIEN, V.; HANH, P.; THANH HAI, N.; MINH, N. Design of an iot check-in system controlling the ministry of health’s 5k regulation. VNUHCM Journal of Engineering and Technology, v. 8, n. 2, p. 2565-2572, 30 jun. 2025.