> For the complete documentation index, see [llms.txt](https://docs.facephi.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.facephi.com/docs.facephi-en/sdks/backend-sdk/selphid/release_notes/6.5.0_releasenotes.md).

# 6.5.0

In this version, the extraction and liveness check engines have been improved with new results and diagnostics. A new parameter has also been added to the configuration to set the facial authentication threshold. This parameter can also be configured individually for a specific image through the verifier options. This functionality is also available in the service endpoints. In the Rest-API service, the Endpoint has been modified `/version`. Now it returns a JSON object with the version of the SDK and the modules instead of a single text string.

## Authentication threshold in Rest-API

```
{
  "image1": "/9j/4AAQSkZJRgABAQEAtAC0AAD...",
  "image2": "/9j/4AAQSkZJRgABAQEAtAC0AAD...",
  "options": {
    ...
    "authThreshold": 60
  }
}
```

## Rest-API /version Endpoint

* **Before**: `"SelphID SDK 6.5.0\n - Module 1 Version: 3.14.0\n - Module 2 Version: 1.0\n - Module 3 Version: 3.14.0\n\nCopyright @ 2025 FacePhi. All rights reserved.\n"`
* **Now**: `{"license":"Copyright @ 2025 FacePhi. All rights reserved.","modules":[" - Module 1 Version: 3.14.0"," - Module 2 Version: 1.0"," - Module 3 Version: 3.14.0"],"version":"SelphID SDK 6.5.0"}`

### Added

* Diagnostic `NoneBecauseEyesClosed` of the liveness check engine.
* Diagnostic `NoneBecauseFaceOccluded` of the liveness check engine.
* Extraction result `FacialMask` of the facial engine.
* Extraction result `ImageQuality` of the facial engine.
* Extraction result `FacialPose` of the facial engine.
* New configuration parameter `FACEPHI_SELPHID_FACIALAUTHENTICATION_THRESHOLD`.
* New method `SetCustomFacialAuthenticationThreshold()` en `SelphIDVerifierOptions`.
* JSON parameter `"options":"authThreshold"` in the service endpoints.
* The endpoint `/version` of the service returns a JSON object instead of a text string.