The content industries consider Digital Rights Management (DRM) to contend with unauthorized downloading of copyrighted material, a practice that costs artists and distributors massively in lost revenue.Based on two conferences that brought together high-profile specialists in this area - scientists, lawyers, academics, and business practitioners - this book presents a broad, well-balanced, and objective approach that covers the entire DRM spectrum. Reflecting the interdisciplinary nature of the field, the book is structured using three different perspectives that cover the technical, legal, and business issues. This monograph-like anthology is the first consolidated book on this young topic.