Windows LiveID is a single sign-on service provided and maintained by Microsoft. By integrating LiveID into your website, you can allow site visitors to log in to your website using their LiveID login and password.
How to start using it
For this to work on your site, you have to do the following things:
1. Register your website at https://manage.dev.live.com/ - to learn how to do it click here
2. Set up Kentico CMS for LiveID authentication - for more details click here
3. Use one of the LiveID web parts on any page of your site - info here
How it works
The following diagram shows how the process of LiveID login works.
Page url: http://devnet.kentico.com/docs/5_5r2/devguide/index.html?live_id_overview.htm