The human-computer interaction, which allows transmission of data, video and voice is known as mobile computing. It uses computer or other wireless devices to transmit the data. Mobile computing includes mobile hardware and software along with mobile communication. Common forms of mobile computing devices are portable computers, smart cards, mobile phones and wearable computers. Mobile communication includes ad hoc networks, communication properties, data formats and infrastructure networks. Mobile application is the software application which is designed to operate mobile devices. Mobile hardware involves mobile device components that access or receive the service of mobility. Mobile computing has some fundamental principles that are portability, connectivity, individuality and social interactivity. This book aims to shed light on some of the unexplored aspects of mobile computing. Most of the topics introduced herein cover new techniques and the applications of mobile computing. This book will serve as a valuable source of reference for those interested in this field.