Before the day
Invite gate staff as scanners. Have each one open the scanner and scan a test pass.
- One scanner per ~300 expected arrivals per hour
- Power banks for every phone
- Printed backup of the attendee list
At the gate
Keep one lane for problems (lost tickets, name changes) so the main lanes keep moving.
Bad network
Scans queue offline and sync when connectivity returns. Keep the backup code entry for unreadable screens.
After
Check attendance and no-show numbers in the dashboard — they tell you how to plan capacity next time.