DigiD Module documentation
The DigiD login module provides the means to integrate DigiD authentication within your site. Certain parts of your site can be secured in such a way that visitors need to login using their DigiD credentials. The actual authentication process is handled by the DigiD site, however Smartsite initiates this process, re-directs the visitor to the DigiD site, and when the visitor has supplied its credentials and is re-directed back to your site, Smartsite executes a verification step and gives the visitor access to the site.
When you have used the DigiD installation option, your site has been updated with a few extra content items and the Smartsite.DigiD.config file. However, before you can start using DigiD authentication, you need to configure the DigiD membership provider.