The active badge location system
ACM Transactions on Information Systems (TOIS)
The anatomy of a context-aware application
MobiCom '99 Proceedings of the 5th annual ACM/IEEE international conference on Mobile computing and networking
Mediacups: experience with design and use of computer-augmented everyday artefacts
Computer Networks: The International Journal of Computer and Telecommunications Networking - pervasive computing
Embedded Everywhere: A Research Agenda for Networked Systems of Embedded Computers
Embedded Everywhere: A Research Agenda for Networked Systems of Embedded Computers
Multi-sensor context-awareness in mobile devices and smart artifacts
Mobile Networks and Applications
A Model-Based, Open Architecture for Mobile, Spatially Aware Applications
SSTD '01 Proceedings of the 7th International Symposium on Advances in Spatial and Temporal Databases
EasyLiving: Technologies for Intelligent Environments
HUC '00 Proceedings of the 2nd international symposium on Handheld and Ubiquitous Computing
Multi-Camera Multi-Person Tracking for EasyLiving
VS '00 Proceedings of the Third IEEE International Workshop on Visual Surveillance (VS'2000)
A Survey of Context-Aware Mobile Computing Research
A Survey of Context-Aware Mobile Computing Research
"Take me with you!": a case study of context-aware application integrating cyber and physical spaces
Proceedings of the 2004 ACM symposium on Applied computing
Semantic Space: An Infrastructure for Smart Spaces
IEEE Pervasive Computing
Towards system software for physical space applications
Proceedings of the 2005 ACM symposium on Applied computing
Deploying and evaluating a location-aware system
Proceedings of the 3rd international conference on Mobile systems, applications, and services
Context-Aware Computing Applications
WMCSA '94 Proceedings of the 1994 First Workshop on Mobile Computing Systems and Applications
Sentient artefacts: acquiring user’s context through daily objects
EUC'05 Proceedings of the 2005 international conference on Embedded and Ubiquitous Computing
AwareMirror: a personalized display using a mirror
PERVASIVE'05 Proceedings of the Third international conference on Pervasive Computing
Implicit interaction with daily objects: applications and issues
Proceedings of the 3rd International Universal Communication Symposium
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In this paper, we propose a middleware, Bazaar, for building location and context-aware services without the need to consider the detail of information capturing, but to allow a developer to concentrate on his/her main task, i.e. the application logic development. Bazaar abstracts the physical world by separating the structures of information and the usage from utilization. It also serves as a shared "physical information repository" to maintain consistency among various applications in the environment, which is often called the world model. The world model in Bazaar contains a location model and an artefact model. The former represents the containment relationship between a unit space like a house and unit regions like the washroom. The static specification and dynamically changing status of an artefact is handled within the artefact model. Here, a sensor augmented artefact acts as a building block for a smart space. Usually, the artefact has a primary role and we have a prior understanding of the meaning o the state-of-use. We call such an artefact a sentient artefact. This paper describes the design and implementation of Bazaar with a programming model that reflects the relationship between locations and objects in the physical environment. Furthermore, we describe experiences from various application development experiments with Bazaar.