Driven by the continued advances in, and widespread adoption of, mobile computing and wireless communications, a paradigm shift in computer usage and information access is emerging. Mobile devices, such as Pocket PCs, PDAs, notebooks, and smart mobile phones, offer powerful platforms for the delivery of new applications and services. When deployed to their full potential, they are expected to radically change the way people work, the way that enterprises operate, and the way members of society interact and live.