This book is intended to discuss the latest mobile interface design beyond the desktop interface design environment, an area of research that is increasingly seeing new developments and techniques in both the academic and practitioner's fields. It comprises many years industrial experience and research in the field of mobile user interfaces. One purpose of the book is to disseminate thoughts about; the challenges and practical experience of the design of mobile interfaces, current developments in mobile product experiences in academia and industry, current methods and approaches to mobile interface development, and the current economic and social context of mobile interface development. More importantly, a key aim of this book is to explore the technical aspects of mobile user interface design, where we need to systematically take into account user interactions, activities and the completely renewed social and cultural environments that mobile environments can integrate with and that technologies are now capable of delivering.