I. I. . Halid and J. A. . Ahmed Mukred, “Environmental Data Reader Bag for Hikers”, EEEE, vol. 2, no. 2, pp. 568–576, Nov. 2021, Accessed: Jul. 18, 2024. [Online]. Available: https://penerbit.uthm.edu.my/periodicals/index.php/eeee/article/view/4491