🎟️ Events, Ticketing & Creators · Sequence
Event Entry Check-in Sequence
How attendees get into an event quickly: QR scan at the gate, validity check that works even if the internet drops, and a live attendance count.
Drawing diagram…
What this diagram shows
- Scanners keep a local ticket list so entry works offline
- A ticket can be used only once
- Organisers see live entry counts
Prompt used
Check-in sequence: before doors open, gate scanner devices download the ticket list. An attendee shows a QR ticket; the scanner checks it against the local list and whether it's already used. If valid, the attendee enters and the scan syncs to the check-in server, which updates the live dashboard. If the ticket was already scanned at another gate, entry is refused and a supervisor is alerted.
Mermaid code
sequenceDiagram
participant S as Gate Scanner
participant CI as Check-in Server
actor A as Attendee
participant D as Organiser Dashboard
participant SV as Supervisor
S->>CI: Download ticket list before doors open
CI-->>S: 12,000 tickets
A->>S: Show QR ticket
S->>S: Check local list and used flag
alt Valid and unused
S-->>A: Green - enter
S->>CI: Sync scan
CI->>D: Update live count
else Already used
S-->>A: Red - already scanned
S->>SV: Alert supervisor
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