> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tixfix.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# The scanner app

> Sign in and check attendees in at the door

The scanner app is what your door staff use to check attendees in. It reads the QR code on an attendee's ticket, confirms the ticket is valid for that event, and records the check-in.

Every ticket scanned counts toward the **Tickets Scanned** figure on your dashboard, so you can watch arrivals in real time from anywhere.

***

## Getting access

<Steps>
  <Step title="The organizer adds the scanner">
    An admin invites them with the **Scanner Plus** role and assigns them to specific events. See [Add a scanner](/scanning/add-a-scanner).
  </Step>

  <Step title="The scanner receives an email invitation">
    TixFix emails the address the admin entered, with instructions for getting into the scanner app.
  </Step>

  <Step title="They sign in">
    They use the email address the invitation was sent to.
  </Step>

  <Step title="They select the event">
    Only events the admin assigned to them are available. If an event is missing, the admin needs to add it to their `Select Events` list.
  </Step>
</Steps>

<Info>
  Setup instructions for getting the scanner app onto a specific device are being finalized for these docs. If your door team needs to be set up before then, email [contact@tixfix.ai](mailto:contact@tixfix.ai) and we'll get them running.
</Info>

***

## Scanning a ticket

Point the device camera at the QR code on the attendee's ticket. The ticket may be on a phone screen or printed; both work.

The result is one of three things:

| Result              | Meaning                                        | What to do                                                    |
| ------------------- | ---------------------------------------------- | ------------------------------------------------------------- |
| **Valid**           | A genuine ticket for this event, not yet used. | Let them in. The check-in is recorded.                        |
| **Already scanned** | This ticket has been checked in before.        | See [Troubleshoot scanning](/scanning/troubleshoot-scanning). |
| **Invalid**         | Not a valid ticket for this event.             | Check they're at the right event before turning anyone away.  |

***

## Questions at the door

If the organizer marked a registration question as **shown when scanning**, the attendee's answer appears when their ticket is scanned — meal choice, drink package, session track.

See [Questions at check-in](/scanning/scan-questions).

***

## Advice for the door team

* **Get set up before doors open.** Sign in, select the event, and test-scan one ticket while there's no queue.
* **Brief staff on "already scanned".** It's usually a duplicate screenshot or a re-entry, not a fraud attempt. Have a rule ready.
* **Keep devices charged.** Scanning runs the camera continuously and drains batteries fast.
* **Have a fallback.** Know who to call if a device fails mid-queue.

<Info>
  Still stuck? Email [contact@tixfix.ai](mailto:contact@tixfix.ai) with your event name and a screenshot.
</Info>