ISSN : 1796-203X
Volume : 1    Issue : 7    Date : October/November 2006

Biometric Gait Authentication Using Accelerometer Sensor
Davrondzhon Gafurov, Kirsi Helkala, and Torkjel Søndrol
Page(s): 51-59
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This paper presents a biometric user authentication based on a person’s gait. Unlike most
previous gait recognition approaches, which are based on machine vision techniques, in our
approach gait patterns are extracted from a physical device attached to the lower leg. From the
output of the device accelerations in three directions: vertical, forward-backward, and sideways
motion of the lower leg are obtained. A combination of these accelerations is used for
authentication. Applying two different methods, histogram similarity and cycle length, equal error
rates (EER) of 5% and 9% were achieved, respectively.

Index Terms
security, biometric, gait recognition, sensorbased gait, unobtrusive authentication, leg acceleration