To send each attendee’s details to their badge, open your event in the Event Badges app and tap **Sync badges**. The app syncs the badges over Bluetooth.

## Before you sync

- The Event Badges app is installed on your phone or tablet. See [Install the Event Badges app (test version)](/help/event-badges/install-the-event-badges-app).
- Your attendee list is imported. See [Create an event and import your attendees](/help/event-badges/create-an-event-and-import-attendees).
- Bluetooth is on, and the badges are near your phone or tablet.

## Sync the badges

1. Open the Event Badges app.
2. Open your event.
3. Tap **Sync badges**.
4. Keep the app open, and the badges near your phone or tablet, until the sync is done.

When the sync is done, each badge shows its attendee’s details.

## What if a badge didn’t sync

If only one or a few badges don’t sync, give those attendees a different badge:

1. Go to **All attendees**.
2. Select the attendee whose badge didn’t sync.
3. Click **Replace badge** at the top of the screen.

For more fixes, see [Troubleshoot event badges](/help/event-badges/troubleshoot-event-badges).

## Related articles

- [Get started with Joan event badges](/help/event-badges/get-started-with-event-badges)
- [Create an event and import your attendees](/help/event-badges/create-an-event-and-import-attendees)