# Smart-ID
Smart-ID is an application that can be used for authentication and document signing in various online services in Estonia, Latvia and Lithuania. It consists of a lightweight web interface that prompts the user for their national identity number and a mobile app that prompts the user for a PIN code.
Smart-ID facts
- Main demographics: Estonia, Latvia, Lithuania
- Use cases: Identity proofing, authentication, electronic signing
- Supported protocols: OIDC, Authentication REST API, SAML 2.0,
- Devices: Mobile, desktop
- Key attributes: Name, national identity number.
- LoA: High
If you want to read more high-level documentation about Smart-ID before you start the integration, see About Smart-ID.
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