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The use of context is important in interactive applications. It is particularly important for applications where the user’s context is changing rapidly, such as in both handheld and ubiquitous computing. In order to better understand how we can use context and facilitate the building of context-aware applications, we need to more fully understand what(More)
Mobile computing continuously evolve through the sustained effort of many researchers. It seamlessly augments users' cognitive abilities via compute-intensive capabilities such as speech recognition, natural language processing, etc. By thus empowering mobile users, we could transform many areas of human activity. This article discusses the technical(More)
In this paper, we describe our experiences of developing and evaluating GUIDE, an intelligent electronic tourist guide. The GUIDE system has been built to overcome many of the limitations of the traditional information and navigation tools available to city visitors. For example, group-based tours are inherently inflexible with fixed starting times and(More)
The GUIDE system has been developed to provide city visitors with a hand-held context-aware tourist guide. The system has been successfully deployed in a major tourist destination and is currently at the stage where it is publicly available to visitors who wish to explore the city. Reaching this stage has been the culmination of a number of distinct(More)
This article considers the importance of context in mobile systems. It considers a range of context-related issues and focus on location as a key issue for mobile systems. A design framework is described consisting of taxonomies of location, mobility, population, and device awareness. The design framework inorms the construction of a semantic model of space(More)
A s mobile devices and location systems such as the Global Positioning System (GPS) and phone-based technologies proliferate, so too does interest in location-based applications. These applications include tourist information systems, buddy services that inform users when a friend is nearby, and location-based advertisements, which marketers send to users(More)
The GUIDE project [4, 6] has been developed to provide city visitors with up-to-date and contextaware hypermedia information while they explore the city of Lancaster in England. Visitors view this information via a handheld GUIDE unit based on the Fujitsu TeamPad 7600 tablet PC, which measures 213x153x15mm, weighs 850g, and is powered by a Pentium 166MHz(More)
The last five years has seen a shift in the nature of mobile computers. The development of increasingly powerful laptop computer systems has been mirrored by the production of a range of small computational devices. The increased prominence of these devices outlined a number of distinct research challenges. These challenges have tended to focus on extending(More)
Lessons learned from building and deploying three experimental public display systems have general app to many types of public ubicomp deployments. Lancaster University's e-Campus project is exploring the creation of large-scale networked displays as part of a public, interactive pervasive computing environment. For the project, we built and deployed three(More)