A messaging data structure for accessing data in an identity-centric manner. An identity may be a user, a group of users, or an organization. Instead of data being maintained on an application-by-application basis, the data associated with a particular identity is stored by one or more data services...http://www.google.co.uk/patents/US20020174125?utm_source=gb-gplus-sharePatent US20020174125 - Messaging infrastructure for identity-centric data access
