Ahmad, Muhammad Hilmi, Wan Amir Fuad Wajdi Othman, Syed Sahal Nazli Alhady, and Aeizaal Azman A. Wahab. 2019. “Development of Low Cost Crowd Sensor”. Mekatronika: Journal of Intelligent Manufacturing and Mechatronics 1 (1):39-44. https://journal.ump.edu.my/mekatronika/article/view/164.