openid

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Run a web site and want to make it easier to sign up or sign in? Find out how to add OpenID to your site in a few steps by using a free, open source library. http://openid.net/

OPENID - OpenID Foundation website

OpenID - SimpleWeb.fr

http://www.simpleweb.fr/2008/11/19/la-creation-de-compte-simplifiee-avec-openid/ La création d’un compte a toujours été une étape pénible pour les utilisateurs et problématique pour les concepteurs.
We encourage you to check out the Plaxo OpenID-based sign-in to get an idea of how the new protocol has been implemented. Google has provided plenty of documentation and examples with this latest release, including a draft specification of the OpenID OAuth Extension , a sample implementation of the new protocol , a Google Groups page dedicated to the topic , and a Google Code project page (complete with source).

OpenID - article sur google

http://blog.programmableweb.com/2009/01/30/google-combines-openid-and-oauth-in-new-hybrid-protocol/