Saputra, N.L.E. and Wulandari, S. 2026. Development of a QR Code-Based Self-Ordering System Integrated with Midtrans and a Kitchen Display System. JSAI (Journal Scientific and Applied Informatics). 9, 3 (Nov. 2026), 457–466. DOI:https://doi.org/10.36085/jsai.v9i3.12074.