“Implementation of Cashless Technology in the Fatahillah Canteen Payment System at Darunnajah Islamic Boarding School ”. JOISTECH: Journal of Information System and Technology 1, no. 1 (June 30, 2024): 40–47. Accessed September 9, 2026. https://ejournal.darunnajah.ac.id/index.php/joistech/article/view/253.