What is OpenID?

OpenID allows you to use an existing account to sign in to multiple websites, without needing to create new passwords.

You may choose to associate information with your OpenID that can be shared with the websites you visit, such as a name or email address. With OpenID, you control how much of that information is shared with the websites you visit.
With OpenID, your password is only given to your identity provider, and that provider then confirms your identity to the websites you visit.  Other than your provider, no website ever sees your password, so you don’t need to worry about an unscrupulous or insecure website compromising your identity.
OpenID is rapidly gaining adoption on the web, with over one billion OpenID enabled user accounts and over 50,000 websites accepting OpenID for logins.  Several large organizations either issue or accept OpenIDs, including Google, Facebook, Yahoo!, Microsoft, AOL, MySpace, Sears, Universal Music Group, France Telecom, Novell, Sun, Telecom Italia, and many more.

Who Owns or Controls OpenID?

OpenID was created in the summer of 2005 by an open source community trying to solve a problem that was not easily solved by other existing identity technologies. As such, OpenID is decentralized and not owned by anyone, nor should it be. Today, anyone can choose to use an OpenID or become an OpenID Provider for free without having to register or be approved by any organization.
The OpenID Foundation was formed to assist the open source model by providing a legal entity to be the steward for the community by providing needed infrastructure and generally helping to promote and support expanded adoption of OpenID.

Here are just a few benefits to using OpenID.

Accelerate Sign Up Process at Your Favorite Websites

Most websites ask for an extended, repetitive amount of information in order to use their application. OpenID accelerates that process by allowing you to sign in to websites with a single click. Basic profile information (such as your name, birth date and location) can be stored through your OpenID and used to pre-populate registration forms, so you spend more time engaging with a website and less time filling out registration pages.

Reduce Frustration Associated with Maintaining Multiple Usernames and Passwords

Most web users struggle to remember the multiple username and password combinations required to sign in to each of their favorite websites, and the password recovery process can be tedious. But using the same password at each of your favorite websites poses a security risk. With OpenID, you can use a single, existing account (from providers like Google, Yahoo, AOL or your own blog) to sign in to thousands of websites without ever needing to create another username and password. OpenID is the safer and easier method to joining new sites.

Gain Greater Control Over Your Online Identity

OpenID is a decentralized standard, meaning it is not controlled by any one website or service provider. You control how much personal information you choose to share with websites that accept OpenIDs, and multiple OpenIDs can be used for different websites or purposes. If your email (Google, Yahoo, AOL), photo stream (Flickr) or blog (Blogger, WordPress, LiveJournal) serves as your primary online presence, OpenID allows you to use that portable identity across the web.

Minimize Password Security Risks

Many web users deploy the same password across multiple websites. And since traditional passwords are not centrally administered, if a security compromise occurs at any website you use, a hacker could gain access to your password across multiple sites. With OpenID, passwords are never shared with any websites, and if a compromise does occur, you can simply change the password for your OpenID, thus immediately preventing a hacker from gaining access to your accounts at any websites you visit.
Because the focus of most OpenID providers (such as Google, Yahoo and AOL) is in identity management, they can be more thorough about protecting your online identity. Most website operators are less likely to be as dedicated to protecting your identity as the OpenID providers, whose focus is on securely hosting user identities.

Goto:http://openid.net/get-an-openid/individuals/

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In order to cover up the costs of hosting we insert a small advertisement on bottom of every page of your website. The ads are inserted automatically during web response. Source files are not modified. If you are looking for no ads hosting please consider our paid hosting packages. Restrictions: no adult, extremist or hate content allowed. No hack, illegal content or phishing websites. We also do not tolerate hot linking and proxy website. Please read our terms of service for the list of all restrictions.

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Facebook Connect

Announcing Facebook Connect

From:https://developers.facebook.com/blog/post/2008/05/09/announcing-facebook-connect/

At Facebook, we're committed to enabling people to communicate and stay connected wherever they go.
In August 2006, we introduced the first version of the Facebook API, enabling users to share their information with the third party websites and applications they choose. Hundreds of companies have leveraged these APIs, allowing users to dynamically connect their identity information from Facebook, such as basic profile, friends, photos information and more, to third party websites, as well as desktop and mobile applications.
In May 2007, we launched Facebook Platform, which allowed third party developers to build rich social applications within Facebook. More than 350,000 developers and entrepreneurs from 225 countries have signed up, and started developing applications, and have seen significant adoption by Facebook users worldwide.
Today we are announcing Facebook Connect. Facebook Connect is the next iteration of Facebook Platform that allows users to "connect" their Facebook identity, friends and privacy to any site. This will now enable third party websites to implement and offer even more features of Facebook Platform off of Facebook – similar to features available to third party applications today on Facebook.
Here are just a few of the coming features of Facebook Connect:
Trusted Authentication
Users will be able to connect their Facebook account with any partner website using a trusted authentication method. Whether at login, or anywhere else a developer would like to add social context, the user will be able to authenticate and connect their account in a trusted environment. The user will have total control of the permissions granted.
Real Identity
Facebook users represent themselves with their real names and real identities. With Facebook Connect, users can bring their real identity information with them wherever they go on the Web, including: basic profile information, profile picture, name, friends, photos, events, groups, and more.
Friends Access
Users count on Facebook to stay connected to their friends and family. With Facebook Connect, users can take their friends with them wherever they go on the Web. Developers will be able to add rich social context to their websites. Developers will even be able to dynamically show which of their Facebook friends already have accounts on their sites.
Dynamic Privacy
As a user moves around the open Web, their privacy settings will follow, ensuring that users' information and privacy rules are always up-to-date. For example, if a user changes their profile picture, or removes a friend connection, this will be automatically updated in the external website.
These are just a few steps Facebook is taking to make the vision of data portability a reality for users worldwide. We believe the next evolution of data portability is about much more than data. It's about giving users the ability to take their identity and friends with them around the Web, while being able to trust that their information is always up to date and always protected by their privacy settings.
We look forward to working with other leading identity providers to develop the best policies and standards for enabling the portability and protection of users' information.
1)You need an app id
2)You can get app id from developer.facebook.com
3)Create a new app in developer.facebook.com,there you will get the app id.
This a working code

<html>
<head runat="server">
   <title>Facebook Login Authentication Example</title>
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script>
</head>

<body style="height: 625px; width: 1316px; background-color:White;">
<script>
    // Load the SDK Asynchronously
    (function (d) {
        var js, id = 'facebook-jssdk', ref = d.getElementsByTagName('script')[0];
        if (d.getElementById(id)) { return; }
        js = d.createElement('script'); js.id = id; js.async = true;
        js.src = "//connect.facebook.net/en_US/all.js";
        ref.parentNode.insertBefore(js, ref);
    } (document));

    // Init the SDK upon load
    window.fbAsyncInit = function () {
        FB.init({
            appId: '**************', // App ID
            channelUrl: 'channel.htm', // Path to your Channel File
            status: true, // check login status
            cookie: true, // enable cookies to allow the server to access the session
            xfbml: true  // parse XFBML
        });

        // listen for and handle auth.statusChange events
        FB.Event.subscribe('auth.statusChange', function (response) {
            if (response.authResponse) {
                // user has auth'd your app and is logged into Facebook
                FB.api('/me', function (me) {
                    alert('Your name is ' + response.name);
                    if (me.name) {
                        document.getElementById('auth-displayname').innerHTML = me.name;
                        document.getElementById('auth-email').innerHTML=me.email;
                        document.getElementById('auth-gender').innerHTML=me.gender;
                    }
                })
                document.getElementById('auth-loggedout').style.display = 'none';
                document.getElementById('auth-loggedin').style.display = 'block';
            } else {
                // user has not auth'd your app, or is not logged into Facebook
                document.getElementById('auth-loggedout').style.display = 'block';
                document.getElementById('auth-loggedin').style.display = 'none';
            }
        });
        $("#auth-logoutlink").click(function () { FB.logout(function () { window.location.reload(); }); });
    }
</script>
<h1>
Facebook Login Authentication Example</h1>
<div id="auth-status">
<div id="auth-loggedout">

<div class="fb-login-button" autologoutlink="true" scope="email,user_checkins">Login with Facebook</div>
</div>
<div id="auth-loggedin" style="display: none">
Hi, <span id="auth-displayname"></span>(<a href="#" id="auth-logoutlink">logout</a>)
 <span id="auth-email"></span>
 <span id="auth-gender"></span>
</div>
</div>


</body>
</html>