Human computer interaction with mobile devices and services : 5th International Symposium Mobile HCI 2003 Udine Italy September 2003 ; proceedings This book constitutes the refereed proceedings of the 5th International Symposium on Mobile Human Computer Interaction Mobile HCI 2003 held in Udine Italy in September 2003. The 21 revised full papers and 29 revised short papers presented together with a keynote paper and an abstract of a keynote speech were carefully reviewed and selected from 122 submissions. The papers are organized in topical sections on mobile users in natural context input techniques for mobile devices location aware guides and planners bringing mobile services to groups in workplaces mobile gambling tools and frameworks for mobile interface design and generation and usability and HCI research methods