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Increasing Security of Mobile Devices by Decreasing User Effort in Verification

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5 Author(s)
Vildjiounaite, E. ; Tech. Res. Centre of Finland, Espoo ; Makela, S.-M. ; Lindholm, M. ; Kyllonen, V.
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Reliable user verification is important for security of computers and personal devices; however, most of well-performing verification methods require explicit user effort. As a consequence, an access is granted for a long time after the only successful verification, which allows replacing the authorized user to the advantage of an impostor, as it is often the case with mobile phones. This work proposes a method of frequent user verification, based on cascading of unobtrusive biometrics with more reliable biometrics, provided explicitly, in such a way that explicit effort is required only if unobtrusive verification fails. Experiments with voice, gait and fingerprint data have shown that in most of noise conditions cascade was able to satisfy security requirements of False Accept Rate 1% and to achieve overall False Reject Rate 3% or less, while requiring explicit effort in 10 - 60% of cases.

Published in:

Systems and Networks Communications, 2007. ICSNC 2007. Second International Conference on

Date of Conference:

25-31 Aug. 2007

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