3rd International Conference on Mobile Systems, Applications, and Services Abstract
Pp. 219232 of the Proceedings
Deploying and Evaluating a Location-Aware System
R. K. Harle and A. Hopper, University of Cambridge, UK
Location-aware systems are typically deployed on a small scale and
evaluated technically, in terms of absolute errors. In this paper, the
authors present their experience of deploying an indoor location
system (the Bat system) over a larger area and running it for a period
exceeding two years.
A number of technical considerations are highlighted: a need to
consider aesthetics throughout deployment, the disadvantages of
specialising sensors for location only, the need for autonomous
maintenance of the computational world model, the dangers in
coinciding physical and symbolic boundaries, the need to design for
space usage rather than space and the need to incorporate feedback
mechanisms and power management. An evaluation of long term user
experiences is presented, derived from a survey, logged usage data,
and empirical observations. Statistically, it is found that
35% wear their Bat daily, 35% characterise their Bat as useful, privacy
concerns are rare for almost 90% of users, and users cite the
introduction of more applications and the adoption of the system by
other users as their chief incentives to be tracked.
This paper aims to highlight the need to evaluate large-scale deployments of such systems both technically and through user studies.
- View the full text of this paper in HTML and PDF.
Until June 2006, you will need your USENIX membership identification in order to access the full papers. The Proceedings are published as a collective work, © 2005 by the USENIX Association. All Rights Reserved. Rights to individual papers remain with the author or the author's employer. Permission is granted for the noncommercial reproduction of the complete work for educational or research purposes. USENIX acknowledges all trademarks within this paper.
- If you need the latest Adobe Acrobat Reader, you can download it from Adobe's site.