Doorman points the iPhone, the QR reads, the ticket validates in 200ms, guest in. The line moves. WiFi doesn't even need to be working.
Half a second from raised phone to guest moving past the rope. Bracelet color called out from the screen. No paper list, no scribbled name spelling.
Door iPad downloads the full guest manifest at open. The line moves even when the venue WiFi crawls or the cell signal dies in the concrete. Sync resumes silently when it's back.
Door host can add a walk-up by name and tier without leaving the scan screen. Tap +, type a name, pick GA / VIP / +1, done. They're on the manifest. Promoter attribution captured at the door.
Who checked in, who scanned, which door, exact second. Duplicates and denies logged too. Monday morning: review the line, find the lost ticket, settle the promoter dispute.
QR scan in 200ms. Offline-first manifest. Walk-ups added at the rope. Audit log that writes itself. The line doesn't queue twice.