Smart-ID is a 2-factor authentication scheme developed by SK ID Solutions for the Baltics. It consists of a very lightweight web interface that prompts the user for his or her national identity number, and a mobile app that prompts the user for a PIN code. With Smart-ID, end-users can access online services and sign documents electronically securely from any device, and without the need to memorize a username and a password.

Use cases

  • Authentication
  • Digital onboarding
  • Electronic signing


  • Estonia
  • Latvia
  • Lithuania

Integration options

  • OIDC
  • SAML
  • Sign API

Developer information

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