Once the treasured piece of the elite class, mobile phones have now become a prerequisite of every commoner. From schoolchildren to pensioners, from bureaucrats to fruit vendors, all depend greatly on their mobile phones now. The reason can be given to its impeccable potential to perform various applications efficiently, within no time. This book on Mobile Commerce gives an in-depth insight on the role of a mobile in revolutionizing various industry verticals, specifically business and commerce. The book, in its second edition, shows the evolution of a mobile phone from a mere gadget meant for communication to a smarter one performing business transactions. The book is divided into seven parts discussing basic concepts, technologies, key players, new products, security and legal aspects, the future trends and the case studies. The book also discusses various technologically advanced handheld devices, like Smart phones, PDA's, Laptops, Tablets and Portable Gaming Consoles, in detail. Besides, the basic technology and concepts involved in application of mobile commerce is discussed comprehensively. The important concepts, like mobile marketing, mobile ticketing, mobile computing, mobile payments and mobile banking are discussed vis-a-vis latest technologies, like wireless and mobile communication technology, digital cellular technology, mobile access technology including 5G and 6G systems. The book also throws light on the issues, such as mobile security hazards, and the necessary measures to protect against the same. A chapter is devoted to laws governing the mobile phone usage and its privacy. The Case Studies are provided elucidating the role of mobile commerce in the real-life scenarios. This book is intended for the undergraduate and postgraduate students of Computer Applications, Electronics & Communication Engineering, Information Technology and Management.