The anatomy of a context-aware application
MobiCom '99 Proceedings of the 5th annual ACM/IEEE international conference on Mobile computing and networking
IEEE Internet Computing
Deploying and evaluating a location-aware system
Proceedings of the 3rd international conference on Mobile systems, applications, and services
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Increasingly advanced ubiquitous systems are becoming possible through advances in technology. This paper reviews the design and deployment of two technologies across an office space of 550m2 to form a pervasive smart environment. The first technology provides ubiquitous location awareness, using ultrasonic tags, and the second provides a pervasive input/output device in the form of an advanced, networked telephone. The paper identifies issues within both deployments and looks at the subsequent usage of both systems. The need for especially high dependability in pervasive smart environments is noted, alongside the need to design with affordances and to include novel feedback channels to the user. The issue of how to select a deployment site is raised, together with the need for maximal logging of events, faults and usage. In analysing usage, we find repetitive trends including novelty periods when users court new applications and smart devices, group-based adoption of services, and an advantage in deploying with a large number of diverse applications. Users take to the technologies well, but must expend great effort in customising them and interest wanes.