Loo, Keng Chuin, and Shamsul Mohamad. “Development of Crowd Control and Tracing for Indoor Facility”. Evolution in Electrical and Electronic Engineering 3, no. 2 (November 14, 2022): 949–957. Accessed August 15, 2026. https://periodical.uthm.edu.my/index.php/eeee/article/view/8469.