This is the position taken in this book that explains how it will be replaced by a new generation of technology, mobile computing from the desktop and eventually integrate it with real-world objects and everyday environments. media possible, but not visible and pervasive reveal functionality on demand in a way that does not interfere and the people who support? daily activities. As a member of the Steering Group of the research initiative funded by the European Union Computer disappeared, the editors of this book managed to gather a collection of 13 chapters and three elaborate preface that discusses the issues and challenges in this area. This book provides a unique combination of concepts, methods and prototypes of ubiquitous computing and pervasive reflect prevailing interest in smart environments and ambient intelligence. Excerpts from three preface to this book: Thierry van der PYL and Thomas Skordas of the European Commission states that: The initiative disappeared Computer anticipated and pioneered the concept of ambient intelligence? Finally, Emile Aarts of Philips Research commented about the relationship of ambient technology and the behavior of people:? "This volume is undoubtedly a major contribution to fill this knowledge gap."