Distributed computing infrastructures provided by sensor networks supports new ways of observing human motion. In this paper, we discuss algorithms that use data from sensor networks for tracking the gait of human walk. Three methods for identifying footsteps and footstep patterns that describe a walk of a subject are discussed. The methods interpret the data into a set of coordinates that represent a trajectory of the subject's walk. The results show that the proposed methods are more accurate and cost less than existing methods.

@inproceedings{SCAFTISL07,
	author	 = {Domnic Savio and Thomas Ludwig},
	title	 = {{Smart Carpet: A Footstep Tracking Interface}},
	year	 = {2007},
	booktitle	 = {{Proceedings of the 21st International Conference on Advanced Information Networking
      and Applications Workshops}},
	publisher	 = {IEEE Computer Society},
	address	 = {Washington, DC, USA},
	number	 = {2},
	pages	 = {754--760},
	conference	 = {AINAW-07},
	organization	 = {IEEE},
	location	 = {Niagara Falls, Ontario, Canada},
	isbn	 = {978-0-7695-2847-2},
	doi	 = {http://dx.doi.org/10.1109/AINAW.2007.338},
	abstract	 = {Distributed computing infrastructures provided by sensor networks supports new ways of
      observing human motion. In this paper, we discuss algorithms that use data from sensor
      networks for tracking the gait of human walk. Three methods for identifying footsteps and
      footstep patterns that describe a walk of a subject are discussed. The methods interpret the
      data into a set of coordinates that represent a trajectory of the subject's walk. The results
      show that the proposed methods are more accurate and cost less than existing methods.},
}