“Analysis of the Effectiveness of the JKN Mobile Application User Interface Design Based on the Usability Heuristic Theory of UI Principles”. Pixel :Jurnal Ilmiah Komputer Grafis 18, no. 2 (December 22, 2025): 160–169. Accessed June 28, 2026. https://journal.stekom.ac.id/index.php/pixel/article/view/3315.