> For the complete documentation index, see [llms.txt](https://docs.caf.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.caf.io/caf-sdk/ios/standalone-modules/caffacelivenesslite.md).

# Face Liveness Lite

Quick links: [Overview](/caf-sdk/ios/standalone-modules/caffacelivenesslite.md) | [Building the SDK](/caf-sdk/ios/standalone-modules/caffacelivenesslite/builder.md) | [Start Liveness Verification](/caf-sdk/ios/standalone-modules/caffacelivenesslite/start-sdk.md) | [UI Customization](/caf-sdk/ios/standalone-modules/caffacelivenesslite/ui-customization.md) | [Installation](/caf-sdk/ios/standalone-modules/caffacelivenesslite/installation.md) | [Current Version](/caf-sdk/ios/standalone-modules/caffacelivenesslite/current-version.md) | [Requirements](/caf-sdk/ios/standalone-modules/caffacelivenesslite/requirements.md) | [Source Code](/caf-sdk/ios/standalone-modules/caffacelivenesslite/source-code.md) | [Result Reference](/caf-sdk/ios/standalone-modules/caffacelivenesslite/result-reference.md) | [Release Notes](/caf-sdk/ios/standalone-modules/caffacelivenesslite/release-notes.md) | [FAQ](/caf-sdk/ios/standalone-modules/caffacelivenesslite/faq_caf_face_liveness_sdk.md)

The CafFaceLivenessLite SDK enables live facial verification with a smaller footprint and simplified API. It detects and rejects spoofing attempts (photos/videos) to protect onboarding and authentication flows.

From **2.0.0** (shipped in **CafSDKiOS 7.3.1**), transaction registration is async-only: the SDK returns a `signedResponse` JWT and your backend retrieves the final liveness result. Face Auth is not supported on Lite.

## Terms & Policies

When using our SDKs, ensure you agree with our [Privacy Policy](https://en.caf.io/politicas/politicas-de-privacidade) and our [Terms and Conditions of Use](https://en.caf.io/politicas/termos-e-condicoes-de-uso).

## SDK Dependencies

CafFaceLivenessLite leverages:

* `iProov Biometrics iOS` 13.2.0

### Runtime Permissions

| Permission | Reason                                                    | Required |
| ---------- | --------------------------------------------------------- | -------- |
| CAMERA     | Capturing the selfie in live facial verification policies | Yes      |

## Footprint and App Size

CafFaceLivenessLite dramatically reduces the binary size compared to the previous CafFaceLiveness while preserving security and analytics in the liveness flow.

### Framework footprint

| Scope                                       | Previous | New      | Reduction     |
| ------------------------------------------- | -------- | -------- | ------------- |
| CafFaceLiveness framework only              | 29.18 MB | \~0.8 MB | \~97% smaller |
| Total frameworks (CafFaceLiveness + iProov) | 39.90 MB | 10.71 MB | \~73% smaller |

### Sample .ipa size

| Package           | Previous | New    | Reduction     |
| ----------------- | -------- | ------ | ------------- |
| Sample app (.ipa) | 3.6 MB   | 1.8 MB | \~50% smaller |

Note: Actual sizes vary by Xcode version, architectures included (arm64/simulator), strip settings, and other app content.


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