# XS4 Face

> XS4 Face is Salto's face-as-a-credential access control platform. This site documents the APIs that external partners use to manage users, enrollment and consent for face recognition on GT7 terminals.

These interfaces are in public BETA.

Integrations come in two levels. A Level 1 integration manages users only,
and enrollment is handled by the Salto Enrollment App. A Level 2
integration also embeds enrollment — terms of service, image capture and
consent — into the partner's own app.

All requests are authenticated with an OAuth 2.0 client credentials token
from the identity service. Face images are biometric personal data; read
the Legal section before building an integration.


## Documentation

- [Introduction](/introduction/index.md)
- [Getting Started](/introduction/_getting_started/index.md)
- [Approval Process](/introduction/_approval/index.md)
- [Change Log](/introduction/_change_log/index.md)
- [Management App (Level 1)](/mms/index.md)
- [User Consent Lifecycle](/mms/_user_lifecycle/index.md)
- [Users API](/mms/_api/index.md)
- [User App (Level 2)](/app/index.md)
- [Enrollment Design](/app/_design/index.md)
- [Enrollment API](/app/_api/index.md)
- [Authentication](/_auth/index.md)

## API specifications

- [Enrollment API v1.3.0](/specs/enrollment-api.yaml): Endpoints for managing enrollment on a site. OpenAPI 3.0.0.- [Identity Service v1.0.0](/specs/identity-api.yaml): OpenID Connect / OAuth 2.0 token endpoint for the Clay identity service. OpenAPI 3.0.3.- [Users API v1.2.0](/specs/users-api.yaml): Endpoints for managing users on a site. OpenAPI 3.0.0.
## Optional

- [/llms-full.txt](/llms-full.txt): the complete documentation and every OpenAPI specification in a single file.