Katuk, Norliza, Nur Haryani Zakaria, and Ku-Ruhana Ku-Mahamud. “Mobile Phone Sensing Using the Built-in Camera”. International Journal of Interactive Mobile Technologies (iJIM) 13, no. 02 (February 22, 2019): pp. 102–114. Accessed May 2, 2024. https://online-journals.org/index.php/i-jim/article/view/10166.