Title: Biometric verification using the motion of fingers: a combination of physical and behavioural biometrics

Authors: Nobuyuki Nishiuchi, Shungo Komatsu, Kimihiro Yamanaka

Addresses: Department of Management Systems Engineering, Graduate School of System Design, Tokyo Metropolitan University, 6-6 Asahigaoka, Hino, Tokyo 191-0065, Japan. ' Department of Management Systems Engineering, Graduate School of System Design, Tokyo Metropolitan University, 6-6 Asahigaoka, Hino, Tokyo 191-0065, Japan. ' Department of Management Systems Engineering, Graduate School of System Design, Tokyo Metropolitan University, 6-6 Asahigaoka, Hino, Tokyo 191-0065, Japan

Abstract: Although verification using traditional behavioural biometrics provides many advantages, this approach is often inaccurate owing to a lack of repeatability. We, therefore, propose a new method of biometric verification using one of the most repeated motions of the body: the bending motion of fingers. The proposed verification method combined both physical and behavioural biometrics in an attempt to differentiate individuals based on temporal continuity and static profiles. In the algorithm, curvature profiles (biological data) and finger joint angles (dynamic data) were calculated from the binary image edge pixels of the forefinger. In the comparison step, the biological data were compared only when the dynamic data of the probe data were consistent with the reference data. On the basis of our validation, we confirmed the repeatability of the bending motion of the finger, and demonstrated that our proposed method is sufficiently accurate for the initial validation of this biometric verification system.

Keywords: biometric verification; behavioural biometrics; finger motion; motor skills; physical biometrics; hand geometry verification; curvature profiles; image processing; finger joint angles; fingers; bending motion.

DOI: 10.1504/IJBM.2010.033387

International Journal of Biometrics, 2010 Vol.2 No.3, pp.222 - 235

Published online: 01 Jun 2010 *

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