What is OpenID?

OpenID is an open, decentralized, free framework for user-centric digital identity. OpenID is a way to sign-in/log-on to any OpenID supported site - without prior registration - even if it is the first time you have visited that site.

That means you will no longer have to register at every site you visit. Because you are using your OpenID (universal passport) to log onto that web site, you are able to skip all the hassles of choosing uniqe names and dealing with diffrant password polices, also you also don't have to fill in a new application form very time.

Visit the wiki HERE.

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How to use OpenID (a screencast)

OpenID lets you log in to different sites without having to create a new username and password for each one. This screencast demonstrates OpenID in action.

Watch the video HERE.

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Certifi.ca - secure OpenID provider

Getting a certifi.ca account is a three-step process, and you've taken the first step by coming to this site! Now, you're two quick steps away from a cryptographically-secure, password-free Web identity.

Visit the website HERE.

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OpenID and all the hassle goes away

The idea on single sign-in was existed for a while with Yahoo, Google and Microsoft with Yahoo Single Sign-in, Google Accounts and Live Passport respectively.

Read the article HERE.