> 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/caffaceliveness/references.md).

# References

### `CafLivenessResult` – Success Event

| Field            | Description                                                    |
| ---------------- | -------------------------------------------------------------- |
| `signedResponse` | The signed response confirming the captured selfie is genuine. |

### `CafSDKFailure` – Error Handling

| Field         | Description                        |
| ------------- | ---------------------------------- |
| `description` | Detailed error message.            |
| `errorType`   | Enum describing the type of error. |

### Error References

| Error               | Description                                                                                                                                       |
| ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------- |
| `unsupportedDevice` | Indicates that the device hardware or software does not meet minimum requirements for facial recognition functionality.                           |
| `cameraPermission`  | Indicates that camera permission is required but not granted. This may occur if the user denies access or if the app lacks necessary permissions. |
| `networkException`  | Indicates a network-related error, potentially due to no internet connection, server timeouts, or network congestion.                             |
| `serverException`   | Indicates a server-side issue with processing the facial recognition request, such as misconfigurations or service interruptions.                 |
| `tokenException`    | Indicates an issue with the provided authentication token, which may be invalid, expired, or lack necessary permissions for facial recognition.   |


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