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
The Cricket location-support system
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Miniaturization, Calibration & Accuracy Evaluation of a Hybrid Self-Tracker
ISMAR '03 Proceedings of the 2nd IEEE/ACM International Symposium on Mixed and Augmented Reality
VR '04 Proceedings of the IEEE Virtual Reality 2004
Sensor-assisted wi-fi indoor location system for adapting to environmental dynamics
MSWiM '05 Proceedings of the 8th ACM international symposium on Modeling, analysis and simulation of wireless and mobile systems
GETA sandals: a footstep location tracking system
Personal and Ubiquitous Computing
UIC '08 Proceedings of the 5th international conference on Ubiquitous Intelligence and Computing
WHLocator: hybrid indoor positioning system
Proceedings of the 2009 international conference on Pervasive services
Short Communication: Improving location awareness in indoor spaces using RFID technology
Expert Systems with Applications: An International Journal
A java-based RFID service framework with semantic data binding between real and cyber spaces
EUC'05 Proceedings of the 2005 international conference on Embedded and Ubiquitous Computing
From posture to motion: the challenge for real time wireless inertial motion capture
Proceedings of the Fifth International Conference on Body Area Networks
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This paper presents the design, implementation, and evaluation of a footprint-based indoor location system on traditional Japanese GETA sandals. Our footprint location system can significantly reduce the amount of infrastructure required in the deployed environment. In its simplest form, a user simply has to put on the GETA sandals to track his/her locations without any setup or calibration efforts. This makes our footprint method easy for everywhere deployment. The footprint location system is based on the dead-reckoning method. It works by measuring and tracking the displacement vectors along a trial of footprints (each displacement vector is formed by drawing a line between each pair of footprints). The position of a user can be calculated by summing up the current and all previous displacement vectors. Additional benefits of the footprint based method are that it does not have problems found in existing indoor location systems, such as obstacles, multi-path effects, signal noises, signal interferences, and dead spots. However, the footprint based method has a problem of accumulative error over distance traveled. To address this issue, it is combined with a light RFID infrastructure to correct its positioning error over some long distance traveled.