Development of a QR Code-Based Self-Ordering System Integrated with Midtrans and a Kitchen Display System

Abstract

Manual paper-based ordering at Dapur Kayangan Resto caused service delays, menu recording errors, and uncertainty about order status. This study developed E-MenuGo, a QR Code-based self-ordering system accessible through a mobile web browser without application installation. The system integrates Midtrans payment, a Kitchen Display System (KDS), real-time status updates, and table status management using a session-isolation mechanism. It was developed with Laravel and MySQL. Evaluation comprised black-box testing of 15 modules in two cycles, latency measurements over 10 iterations on a local Wi-Fi network, a comparison of 50 simulated transactions, and a System Usability Scale (SUS) assessment involving 35 respondents. All modules passed functional testing (100%), while WebSocket latency between dashboards ranged from 165.3 to 184.7 ms. In the simulated transactions, the time until orders started cooking decreased from 14.5 to 2.503 minutes (82.7%), and recording errors decreased from 12.0% to 0.0%. The SUS score was 88.65, categorized as Excellent. The results indicate that the system performed according to the tested scenarios and produced measurable improvements in the simulations at Dapur Kayangan Resto. These findings cannot yet be generalized because the evaluation involved one restaurant and simulated transactions.