Info OpenID
OpenID eliminates the need for multiple usernames across different websites, simplifying your online experience.

You get to choose the OpenID Provider that best meets your needs and most importantly that you trust. At the same time, your OpenID can stay with you, no matter which Provider you move to. And best of all, the OpenID technology is not proprietary and is completely free.

You can use OpenIDs from any provider. If you don't have already an OpenID you can find a provider in this provider list.

To create an OpenID for a test user, you can use this site, but this OpenID not reliable for general use.