> For the complete documentation index, see [llms.txt](https://help.getmobly.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.getmobly.com/help-center/host/how-to-check-in-leads.md).

# How to check in leads

{% embed url="<https://getmobly.wistia.com/s/cybzambepr9ikqb>" %}

Check-in swipes a registered guest to **Attended** status via the Mobly mobile app. The workflow is the same whether your registrants came in through Host or a CSV attendee list you uploaded — the only difference is upstream, in how the leads landed on the event.

## What you need

* **Leads already attached to the event.** Two ways to get them there:
  * **Host registration** — registrants sync in automatically when they fill out your event's form. See [How registrants flow from Host into Mobly](/help-center/host/how-registrants-flow-into-mobly.md).
  * **CSV upload** — for events that don't use Host, upload your attendee list before the event. See [How to upload an attendee list](/help-center/host/how-to-upload-an-attendee-list.md).
* **The Mobly mobile app** installed on your event staff's phones — [iOS](https://apps.apple.com/us/app/mobly/id6446095722) or [Android](https://play.google.com/store/apps/details?id=com.mobly.app\&hl=en\&gl=US\&pli=1)
* **Check-in enabled for your org.** You'll see a **Registration** tab on each event when this is on. If you don't see it, contact your CSM.

## At the event — checking guests in

1. Each event-staff member opens the **Mobly mobile app** and selects the event (the event banner at the top of every screen shows which event you're working in).
2. Tap into the event's **Leads** tab.
3. When a guest arrives, find their name in the list (search is fastest for big rosters).
4. **Swipe right** on their row to check them in.

That's it. The lead's status updates to **Checked In** in Mobly.

## Fixing an accidental check-in

**Swipe left** on the lead's row to reverse it. The lead goes back to **Registered** status.

## Walk-ins (guests not on the registration list)

For guests who show up who weren't pre-registered:

* **If they have a badge** — scan them like a normal lead capture
* **If they don't have a badge** — enter their name manually from the capture screen

They land as a new lead in the event with **Scanned** status (different from Registered — useful for separating pre-registered vs. walk-up traffic in your reports later).

For events with heavy walk-in traffic, the Registered vs. Scanned status distinction in the lead table is your friend for post-event reporting.

## Notes for Host-registered events

If your event uses Host, a couple of extras to know:

* **Two-way sync.** When you check someone in on the Mobly side, Host's registration data updates too — the guest count in Host's analytics matches what you're seeing on the floor. Same for undo (swipe left reverts on both sides).
* **The no-email edge case.** If a Mobly lead lacks an email address, Mobly won't push that lead's check-in back to Host. No error is shown — the lead is checked in on the Mobly side, just not reflected in Host. Rarely matters since Host registrants almost always have an email; can come up for walk-ins or manually-added leads.
* **Real-time reporting.** While the event runs, the Hub's event detail page shows live check-in counts and Host's registration dashboard shows registered vs. attended — both surfaces stay in sync automatically. If Marketing watches Host's funnel and on-site staff use Mobly to check people in, both teams see the same numbers without doing anything special.

## Related articles

* [How to upload an attendee list](/help-center/host/how-to-upload-an-attendee-list.md) — CSV prep step for events without Host
* [How registrants flow from Host into Mobly](/help-center/host/how-registrants-flow-into-mobly.md) — how Host-registered leads land on the event
* [How to capture a lead](/help-center/the-mobly-app/capture-and-enrichment/how-to-capture-a-lead.md) — for walk-ins
* [How to prep for your upcoming event](/help-center/the-hub/managing-events/how-to-prep-for-an-event.md)