> 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/6.12.1_releasenotes.md).

# 6.12.1

In this version, support for new FMAD cases has been added (*Face Manipulation Attack Detector*). To enable this new functionality, it is necessary to set a new environment variable, as it requires additional computation time.

```
# Liveness engine with new FMAD detector
FACEPHI_SELPHID_FACIALLIVENESS_DEPTH=full

# Variable not present, empty or with other values, FMAD will not be set
FACEPHI_SELPHID_FACIALLIVENESS_DEPTH=
```

### Added

* `FACEPHI_SELPHID_FACIALLIVENESS_DEPTH=full` to enable the FMAD detector (*Face Manipulation Attack Detector*) in the liveness check engine.