# I'm an operator

XS4 Face supports Salto {{< glossary_term "access_control_system" >}}Access Control Systems{{< /glossary_term >}} by providing a **face authentication** option for permitting access to online access point.

The system connects to [Salto Space](/space) to facilitate user enrollment through the {{< glossary_term "xs4face_enrollment_service" >}}XS4 Face Enrollment Service{{< /glossary_term >}}.

Check out [this guide on using **face authentication** options within Salto Space](/space/user-guide/operator/cardholders/users#face-recognition).

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