Windows CardSpace empowers organizations to prevent identity theft and systematically address a broad spectrum of security and privacy challenges. Understanding Windows CardSpaceis the first insider???‚¬?„?s guide to Windows CardSpace and the broader topic of identity management for technical and business professionals. Drawing on the authors???‚¬?„? unparalleled experience earned by working with the CardSpace product team and by implementing state-of-the-art CardSpace-based systems at leading enterprises, it offers unprecedented insight into the realities of identity management: from planning and design through deployment.