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 [Internet]. 1Jul.2025 [cited 31Jul.2025];6(SI2). Available from: https://stdjet.scienceandtechnology.com.vn/index.php/stdjet/article/view/1115