> ## Documentation Index
> Fetch the complete documentation index at: https://tfh-takis-selfie-check-docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# How to get access

> Install the sandbox World ID app and point your integration at the Sandbox environment.

Getting set up in Sandbox has two parts: install the **sandbox World ID app** on your
test device, and point your **integration** at the Sandbox environment. Both are
covered below.

New here? Start with [What is Sandbox?](/world-id/sandbox/what-is-sandbox) for context.

## 1. Install the sandbox World ID app

The sandbox apps are not publicly listed in the App Store or on Google Play. You
install them through the testing links below.

### iOS — TestFlight

1. Install [TestFlight](https://apps.apple.com/app/testflight/id899247664) from the
   App Store if you don't have it.
2. Open the public TestFlight link to join the external tester group:
   [testflight.apple.com/join/VZEurhHe](https://testflight.apple.com/join/VZEurhHe)
3. Install the **World ID (Sandbox)** build from TestFlight.

No App Store Connect account or per-email invite is required — the public link admits
you to the external tester group directly.

### Android — Google Play

The sandbox build is distributed through a **private testing track on Google Play**.

1. In the Developer Portal, select **World ID Sandbox** from the sidebar.
2. Enter the email address associated with your Google Play account to request tester
   access.
3. Once access is granted, scan the QR code or open the Google Play link on the same
   page.
4. Sign in with the same Google Account and install the **World ID (Sandbox)** build.

## 2. Point your integration at Sandbox

1. **Update IDKit** to the latest version.
2. **Set `environment: sandbox`** in your IDKit configuration.

Nothing else is required — the handoff will open the sandbox World ID app and return a
proof to your session over the bridge.

## Things to know

* **Sandbox apps aren't publicly listed in the app stores.** Testers install via
  TestFlight (iOS) or a private Google Play testing link (Android). Because access is
  gated to testers, install links and store acquisition can behave differently from a
  public production listing.
* **Proofs are non-production.** Identities and proofs issued in Sandbox are for
  integration validation only.
* **Accounts are resettable.** You can delete and recreate accounts freely while
  testing.

## Next step

Once you're installed and pointed at Sandbox, you're ready to run the Selfie Check
integration flows. See [Testing Selfie Check in Sandbox](/world-id/sandbox/testing-selfie-check)
for coverage, critical user journeys, and known limitations.