OpenID is a shared identity service, which allows internet users to log on to many different web sites using a single digital identity.
All you have to do is choose an OpenID provider, that is most appropriate for you ant the one that you trust most and login to all the sites that support OpenID with the identity provided by the OpenID provider.

Why OpenID?

• OpenID is decentralized system. It means that you can choose the OpenID provider from the mass.
• OpenID is safe, advanced and modern system that implements existing advanced Internet standards.
• OpenID is approved by the biggest IT companies like "Google", "Microsoft", "IBM", "Verisign", "Yahoo" and other.
• OpenID is flexible. You can choose how much and which personal information to provide to the website tha you login to.
• OpenID is open and free standard.

How does the OpenID identity look like?
OpenID is an URL (Internet address), that you need to type in the login field. Each OpenID provider gives different OpenID addresses, for example:

• username.myopenid.com (http://username.myopenid.com)
• http://openid-provider.address.com/username

Who controls the OpenID?
OpenID is coordinated by the OpenID foundation. The members of the foundation are representatives "Google", "Microsoft", "IBM", "Verisign", "Yahoo" and other companies.