The last several weeks has seen very busy activity in the authentication community developing an API for Authentication. For clients, this means that there will be a simple way to publish and interact with protected data and also a simpler way to allow people to give you access to their data. On the server side, it allows users to not have to spread their passwords around the net to get access to the data. OAuth allows users to get access to their data while protecting their account credentials.
Stay tuned for more on this as the spec is released. It is built using much of OpenID.
Guy
www.authenticationworld.com
guy.huntington@authenticationworld.com

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