Introduction
Pervasive computing environments based on the ubiquitous communications paradigm have attracted significant research interest and have found increased applicability in commercial settings, attributed to the fact that they provide seamless, customized, and unobtrusive services to their users. Research on pervasive and ubiquitous computing has been prolific over the past years, leading to a large number of corresponding diverse software and hardware infrastructures, networking solutions, methodologies, and frameworks. There exists, therefore, a necessity for an edited collection of articles in this area, in order to present the most noteworthy current research contributions and provide pointers to pioneering future directions.

Objective of the Book
This book will aim to provide relevant theoretical frameworks and the latest empirical research findings in the area. The overall objective of this publication is to serve as a reference point for anyone engaging with pervasive computing and communications from a technological, sociological, or user-oriented perspective. Since the research stream of pervasive computing has been extremely active and prolific in terms of results and projects over the last few years, this publication targets at collecting the aforementioned research output and encompassing and taxonomically organizing it in a comprehensive book. The field is quite vast and is dispersed in many disciplines, hence the necessity for a book to collect and uniformly present all related aspects of pervasive computing and communications.

Target Audience
The prospective audience of the proposed publication is mainly professionals, researchers, and students in informatics and computer science that engage themselves with pervasive computing and communications. The book will serve primarily as a point of reference book to all related technologies, applications and techniques, as well as an indicator of future and emerging trends to stimulate the interested readers. Researchers will also benefit from having such a reference book on their field, indicating the main achievements in the interdisciplinary domain of pervasive computing and the future trends and directions.

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