Technical Build·Events + hospitality group·Node.js·WebSockets
Real-Time Event Check-In System
Problem
A hospitality group running large-scale corporate events was managing attendee check-in with printed lists and manual tick-offs. Entry queues backed up badly at peak arrival windows, staff couldn't see real-time attendance counts across multiple gates, and post-event data reconciliation took hours.
Solution
Built a web-based QR code event management system: unique QR codes generated and emailed per registration, a mobile-friendly scan interface deployable on any device without app installs, multi-gate support with real-time sync, a live attendance dashboard for event ops, and automatic post-event CSV export.
Process flow
Judgment
Used a PWA scan interface rather than a native app: no app store friction, deployable on any staff device in under 60 seconds with a URL.
