> 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/rest-api/identity-api/identity-api-reference/users/users-blacklists.md).

# Users Blacklists

The Users Blacklists API allows you to manage a shared facial recognition blacklist. Only the client that registered a face can retrieve the full userId in search results and delete the corresponding entry.

#### Available operations

* **Enroll User Blacklist**: Registers the face of a new user in the shared blacklist. The userId must be unique within the collection.
* **Search User Blacklist**: Performs a 1:N Facial Recognition search within the blacklist. Other clients will only see the similarity score, without the userId.
* **Unenroll User Blacklist**: Deletes a user's record from the blacklist. Only the client that registered it can perform this operation.