Hosting large-scale culinary events like the Mankokumi ramen festival demands a robust digital infrastructure. At the main entrance, thousands of attendees arrive simultaneously with e-tickets. If ticket scanning is slow or fails to detect duplicate tickets, massive entrance queues are inevitable.
To address this, we developed a dynamic ticketing system using SHA-256 encrypted QR codes. Each ticket purchase generates a unique encrypted token containing attendee info, transaction ID, and digital signature, converted into a QR code sent via email/WhatsApp.
On the ground, gate crews use a webapp-based scanner optimized to scan QR codes in under 500ms. The scanner validates check-in status instantly with the main server. If a token is scanned a second time, the system triggers a duplicate alert.
As a result, the Mankokumi festival maintained an orderly visitor flow without front gate bottlenecks. Organizers also monitored live attendance graphs on a dashboard to coordinate crowd management resources.