How do I implement site authentication using gmail, yahoo or facebook IDs (not OpenID login)?
PS: Using PHP.
How do I implement site authentication using gmail, yahoo or facebook IDs (not OpenID
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How do I implement site authentication using gmail, yahoo or facebook IDs (not OpenID login)?
PS: Using PHP.
Google offers two APIs for login: http://code.google.com/apis/accounts/docs/AuthSub.html http://code.google.com/apis/accounts/docs/OAuth.html
EDIT as AuthSub was officially deprecated on April 20, 2012 and will be shut down on April 20, 2015.
You can use new API.. https://developers.google.com/accounts/docs/OAuth2
Yahoo also offers another one: http://developer.yahoo.com/auth/