Understanding Windows CardSpace : The Book!
About the book:
"Windows CardSpace empowers organizations to prevent identity theft and systematically address a broad spectrum of security and privacy challenges. Understanding Windows CardSpace is 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. "
Truly quite exciting.
Not only is it a really great look at CardSpace, and identity technology in general, but the first section (which Vittorio wrote) is something quite remarkable--it really educates practically anyone on the fundamentals of cryptography and identity in a way I'd never seen before.
I recommend this book wholeheartedly :D