This comprehensive resource offers professionals detailed guidance on the engineering aspects of building software for wireless communications. From design and architecture to security and testing, the book shows how to overcome every engineering challenge encountered in successfully developing wireless software. Filled with open-source code examples, this handy reference provides practical, ready solutions for building software applications that make wireless networks work. It covers such hot applications as wireless information systems, wireless advertising and marketing, wireless payment systems, location-based portals, and mobile trading and sales systems. The book also explains how to integrate these applications into wireless LANs, personal wireless networks, and 3G and 4G wireless networks. Written for software developers and architects at all levels, this volume includes hands-on tutorials that take readers through each phase of wireless software development and implementation.