> 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/finger/technical_documentation/api_reference/finger-operations.md).

# Finger Operations

Fingerprint template extraction and 1:1 authentication. These endpoints use the public payload contract introduced in 2.0.0 and are only registered on `master` nodes.