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

# Testing Selfie Check in Sandbox

> Coverage, critical user journeys, and known limitations for testing your Selfie Check integration in Sandbox.

Sandbox lets you run the full [Selfie Check](/world-id/credentials/11) relying-party
journey end-to-end — from your surface, through IDKit, into the sandbox World ID app,
and back — without touching production identities or real proofs.

New to Sandbox? Start with [What is Sandbox?](/world-id/sandbox/what-is-sandbox) and
[How to get access](/world-id/sandbox/sandbox-access) before working through this
guide.

<Note>
  In scope: the full relying-party journey — request handoff, consent, capture,
  enrollment and matching, proof generation, and delivery of the proof. Out of scope:
  production identity data and real-world uniqueness at scale. Sandbox accounts and
  proofs are for integration testing only, not load testing, security certification,
  or production sign-off.
</Note>

## Coverage

Testing is organized by entry surface and user state, using the same [Hot, Cold, and
Semi-cold states](/world-id/idkit/verification-flows) as the rest of World ID:

* **Hot** — the user already has World ID installed. If they're already Selfie Check
  enrolled, they go straight to face match; if not, World ID walks them through
  enrollment first, then match. (Selfie Check has no distinct Warm flow — enrollment
  happens inline within Hot, same as [Verification Flows](/world-id/idkit/verification-flows)
  describes.)
* **Cold** — a new user with no World ID app: the full funnel, including install,
  account creation, date of birth, invite code (iOS), enrollment, and Selfie Check.
* **Semi-cold** — an existing user without World ID on this device: reinstall and
  account recovery, then Selfie Check.

| Entry surface | State     | What it exercises                                                                                   |
| ------------- | --------- | --------------------------------------------------------------------------------------------------- |
| Native app    | Hot       | Same-device: validated user presents a face credential; deep link into World ID and back.           |
| Native app    | Cold      | Install → create account → add date of birth → redeem invite code → enroll → complete Selfie Check. |
| Native app    | Semi-cold | Existing user reinstalls and recovers their account on a fresh device, then completes Selfie Check. |
| Web app       | Hot       | Cross-device: start on web, complete on phone via QR scan, proof returns to the web session.        |
| Web app       | Cold      | Same cold funnel, cross-device via QR; proof returns to the originating web session.                |
| Web app       | Semi-cold | Same semi-cold recovery, cross-device via QR.                                                       |

## Known limitations

* **Sandbox apps aren't published to the app stores.** As with other Sandbox testing,
  install deep links won't route to a store listing the way they do in production —
  see [How to get access](/world-id/sandbox/sandbox-access#things-to-know). This means
  the Cold and Semi-cold journeys above can't be exercised exactly as they will be once
  the app is on the App Store or Play Store.
* **iOS Semi-cold is currently limited.** The reinstall/login journey reliably works on
  Android today. On iOS, if the user taps "Sign in" instead of "Sign up" mid-flow,
  there's no path to add the invite code — they have to restart from a fresh QR or deep
  link. Expect iOS Semi-cold to behave differently from Android until this is closed.
* **Invite-code handling in the Cold flow differs by platform.** Confirm how invite
  codes are presented and redeemed on the platform you're targeting — see
  [invite-code mode](/world-id/idkit/verification-flows#with-invite-code-mode).

## Next step

Questions, or found a journey these scenarios don't cover? Reach out to your World
point of contact.