Duplicate QR
The app warns that the QR has already been scanned. Check the history and decide.
Door operations
Troubleshooting QR check-in at the door
Every event access control team meets the same four incidents: a duplicate QR, a code that will not come up, an attendee in the wrong seat, and a venue with no signal. The QRACCESS app and the dashboard let you search attendees, check their status, read the scan history and decide on the spot — with data, not guesswork.
The most common cases
Each incident has its own routine. Find your case and follow the steps.
QR not found
Verify the event, the date and the group before turning anyone away.
Wrong seat
The zone, row and seat highlight settles the seating without argument.
No signal
Offline mode validates without a connection and syncs afterwards.
Duplicate QR: what the app shows and what to do
When a QR code has already been scanned, the app shows a repeated-scan alert. Depending on how the event is configured, the scan is rejected outright or the scanner user is asked whether to admit it.
- 1. Read the alert in the app: it means that QR already has a scan on record.
- 2. Open the History tab and check the attendee's scans and their detail.
- 3. If it was an accidental double scan at the same checkpoint, carry on as normal.
- 4. If the QR was already used to get in, apply the event's policy — a question to the scanner user or outright rejection, whichever is configured in the dashboard.
The scan history shows when each QR was scanned, so the incident is settled with data rather than a discussion at the door.
QR not found: verify the event, the date and the group
A perfectly valid QR can show up as not found when the app is not on the right event. Before refusing entry, check the configuration.
- 1. Confirm the selected event: use the app's search, which finds events by event name, group name or shift name.
- 2. Check the date selected in the Config tab: a wrong date can lock the attendee out.
- 3. Check the group: the QR may belong to a different group or list in the same account.
- 4. If it still does not appear, search for the attendee by name, email or any other visible field.
An attendee in the wrong seat
At events with numbered seating, the zone, row and seat highlight settles the seating — no arguments and no paper lists.
- 1. Scan the attendee's QR again with the app.
- 2. The app highlights the ZONE, the ROW and the SEAT they have been assigned.
- 3. Walk the attendee to their place; the ticket — PDF, email or QR — carries the same details.
There is more detail in the guide on using the app online and offline.
No signal: work in offline mode
If the venue has no coverage, or the network fails during the event, offline mode keeps QR check-in running.
- 1. Download the event data in the app before check-in starts.
- 2. Validate the QR codes with no connection: the scans are stored on the device.
- 3. When the connection comes back, the app syncs the scans with the dashboard automatically.
- 4. If the network drops mid-event, the app tolerates the outage and access never stops.
See the full guide to online and offline mode.
The check-list for any incident
Whatever the symptom, these five checks resolve almost every issue at the door.
- Confirm the event and the date selected in the app.
- Review the scanner user's permissions.
- Check whether the app is in online or offline mode.
- Consult the scan history.
- Use manual validation only when it is warranted.
Try it right away
Would you like to try QRACCESS at your next event?
Create an account and start setting up your first event from the web control panel.
Control panel: https://control.qraccess.com