> 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/6.14.0_releasenotes.md).

# 6.14.0

In this version, the biometric extraction and passive liveness check engines have been updated. The models and pipelines have been thoroughly reviewed, improving accuracy and performance.

### Improved

* Updated facial extraction engine, more accurate at extracting biometric templates from low-quality images.
* Updated passive liveness check engine, more accurate in FMAD (face manipulator attack detection) cases.

### Added

* New C++ programming example in `/examples/cpp`.
* C++ API documentation in `/doc/api/cpp`.