DIZKO
The door screen lives at /organizer/events/<event>/door. It runs in a normal browser tab and in the installed Dizko app, on iPhone and Android, with no dedicated hardware. Open it, tap to scan Dizko tickets, and point the camera at each QR.
What is on the screen
One surface carries the whole door:
- The scanner. Uses the browser's native barcode detection where available and falls back to a bundled decoder everywhere else, including Safari and the installed app.
- Guest list and plus-ones. Comps and guest entries appear here as real tickets.
- Name and short-code search. For the screens that will not scan, which there are always a few of.
- Live headcount. The number in the room, updating as you scan.
- Check-in reversal. For the inevitable mis-scan.
The verdicts
| Verdict | Meaning | What to do |
|---|---|---|
| Admitted | Valid ticket, first scan. Checked in and counted. | Let them in. |
| Already in | This ticket was scanned before. Shows when, and at which gate. | First scan wins. Turn the copy away. |
| Wrong event | A real ticket, for a different event. | Redirect them. |
| Replaced | The ticket was transferred. This QR retired when the new holder claimed it. | The current owner holds the live QR. |
| Refunded or void | The order was refunded or cancelled after the ticket was issued. | Not valid. |
| Not found | Not a Dizko ticket, or forged. | Turn away. |
The useful one is "already in", because it tells you the time and the gate of the original scan. That converts an argument into a fact.
Why the door needs signal
Every scan is verified against the server rather than against a list cached on the phone. That is what stops a screenshot of an already-used ticket getting in, and it is the whole reason the verdicts above can be trusted.
The trade-off is that the scanner needs a connection. Offline, it refuses loudly rather than silently admitting people, which is the correct failure mode but a bad surprise at 22:00. So:
- Check signal at the exact spot where the door will stand, in the afternoon.
- Keep the door phone on cellular rather than trusting venue wifi.
- Bring a battery pack. Four hours of camera and full brightness will finish a phone.
- If the doorway is a dead zone, move the scan position inside or bring a hotspot.
The manual fallback
Cracked screens, dead phones, brightness turned down, a QR printed badly. Every ticket carries a short reference like DZ7K2M9QRT, and the door screen searches by that code and by name. It is slower than scanning, which is exactly why it belongs to the second door person rather than the one holding the queue.
Reversing a mistake
Scanned the wrong person, or admitted someone who then could not come in? Reverse the check-in from the door screen and the headcount corrects itself. Do it immediately, while you still know which ticket it was.
One iOS quirk
The installed app may re-ask for camera permission on each launch. That is Apple's behaviour rather than a bug. A normal Safari tab remembers the permission, so if you are handing a phone to someone at 19:45 and want one less thing to explain, use a browser tab.
Before doors, every time
- Issue yourself a comp and scan it. Confirm "admitted".
- Scan it again. Confirm "already in".
- Reverse the check-in and confirm the count drops.
- Search that ticket by short code and by name.
- Check the battery and the signal at the door position.
Two minutes, and it removes the entire category of door problems that get discovered in front of a queue.
Questions organizers ask
Does the scanner work on iPhone?
Yes. It uses the browser’s native barcode detection where that exists and a bundled decoder everywhere else, including Safari and the installed app.
What happens if the internet drops mid-door?
The scanner refuses and says so rather than admitting people it cannot verify. Fall back to short-code and name search with a manual count, and fix the connection.
Can two people scan at once?
Yes. Both see the same live state, and the "already in" verdict shows which gate scanned a ticket first, so duplicates are caught across doors.
Do comps scan like paid tickets?
Yes. Complimentary tickets carry a normal QR, use capacity, and appear in the headcount, which is what keeps your door count honest.