---
title: "Swift Mode Overview"
slug: "swift-mode-checkin-overview"
tags: ["Mobile Check-in App"]
updated: 2025-09-15T17:30:12Z
published: 2025-09-15T17:30:12Z
canonical: "docs.blackthorn.io/swift-mode-checkin-overview"
---

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

# Swift Mode Overview

This guide is for event staff checking in Attendees. Event staff only need basic familiarity with the Mobile Check-in app—no technical expertise is required.

          Session Check-in Restriction

          

While Mobile Check-in app users can check in Attendees for Sessions with the app, they cannot use the Swift Mode feature to check in Attendees for Sessions.

## What is Swift Mode?

The Swift Mode feature for the Mobile Check-in app is designed to make the Event check-in experience faster and more reliable, especially for large Events or when internet connectivity is limited.

Unlike the traditional approach, where each check-in is sent to the server one at a time (a “one-off” sync), Swift Mode works by saving all check-ins locally on your device as you go. When you're ready to sync, these check-ins are then grouped and sent to the server in a single batch.

The batching process greatly reduces the number of API calls made to the server, speeding up the check-in process and helping prevent slowdowns and errors when handling thousands of Attendees. By syncing in batches, Swift Mode ensures that check-ins are quick, efficient, and less likely to be interrupted by network issues, making it ideal for busy, high-volume Events.

## Compare Standard Check-in to Swift Mode

| Feature | Standard Mobile Check-in | Swift Mode Check-in |
| --- | --- | --- |
| Enablement | Default | Toggle *Swift Check‑In Mode* + optional *Continuous Scan Mode* in Settings |
| QR code / External ID | One‑at‑a‑time scan > Attendee page (tap **Save**) | 4× faster camera launch, confirmation beep, no attendee page displayed |
| Search | Partial matches OK (e.g., “Ada L”), full list displayed | Exact first or last name or email or company only, no scrollable list (faster query) |
| Offline | Optional Offline Mode (manual toggle); [External ID](https://docs.blackthorn.io/docs/mobile-checkin-app-external-id) is disabled when offline | Does not require Wi-Fi except for the initial loading of Attendees and the later syncing of Attendees, which can be done before and after the Event; External ID is disabled when offline |
| Sync | Manual **Refresh** button; no batch IDs; occasional data conflicts for high volume events | Sync Manager page, progress bars, Request IDs & retry |
| High‑volume scan | Must re‑open scanner after scanning each QR code | Continuous Scan Mode—keeps the camera open until you no longer need to scan QR codes |

## Set Up and Use Swift Mode

Complete the steps below to set up Swift Mode and check in Attendees.

1. [Enable Swift Mode](https://docs.blackthorn.io/docs/using-swift-mode#enable-swift-mode)
2. [Check In Attendees by Name or Email Search](https://docs.blackthorn.io/docs/using-swift-mode#check-in-attendees-by-name-or-email)
3. [Check In Attendees by Scanning a QR Code](https://docs.blackthorn.io/docs/using-swift-mode#check-in-attendees-by-scanning-a-qr-code)
4. [Sync Attendees and View Check-Ins](https://docs.blackthorn.io/docs/using-swift-mode#sync-attendees-and-view-check-ins)
5. [Add Attendees](https://docs.blackthorn.io/docs/using-swift-mode#add-attendees)

## References

- [Cheat Sheet (Quick Reference)](https://docs.blackthorn.io/docs/swift-mode-references-troubleshooting#cheat-sheet-swift-check-In-quick-reference)
- [Troubleshooting](https://docs.blackthorn.io/docs/swift-mode-references-troubleshooting#troubleshooting)
- [FAQs](https://docs.blackthorn.io/docs/swift-mode-references-troubleshooting#faqs)
- [Support](https://docs.blackthorn.io/docs/swift-mode-references-troubleshooting#support)

## Related

- [Using Swift Mode](/using-swift-mode.md)
- [References and Troubleshooting](/swift-mode-references-troubleshooting.md)
- [Swift Mode Technical Information](/swift-mode-technical-information.md)