3 research outputs found
Increasing the Robustness of Biometric Templates for Dynamic Signature Biometric Systems
Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. R. Tolosana, R. Vera-Rodriguez, J. Ortega-Garcia and J. Fierrez, "Increasing the robustness of biometric templates for dynamic signature biometric systems," Security Technology (ICCST), 2015 International Carnahan Conference on, Taipei, 2015, pp. 229-234. doi: 10.1109/CCST.2015.7389687Due to the high deployment of devices such as
smartphones and tablets and their increasing popularity in our
society, the use of biometric traits in commercial and banking
applications through these novel devices as an easy, quick and
reliable way to perform payments is rapidly increasing. The
handwritten signature is one of the most socially accepted
biometric traits in these sectors due to the fact that it has been
used in financial and legal transitions for centuries. In this paper
we focus on dynamic signature verification systems. Nowadays,
most of the state-of-the-art systems are based on extracting
information contained in the X and Y spatial position coordinates
of the signing process, which is stored in the biometric templates.
However, it is critical to protect this sensible information of
the users signatures against possible external attacks that would
allow criminals to perform direct attacks to a biometric system
or carry out high quality forgeries of the users signatures.
Following this problem, the goal of this work is to study
the performance of the system in two cases: first, an optimal
time functions-based system taking into account the information
related to X and Y coordinates and pressure, which is the common
practice (i.e. Standard System). Second, we study an extreme
case not considering information related to X, Y coordinates and
their derivatives on the biometric system (i.e. Secure System),
which would be a much more robust system against attacks,
as this critical information would not be stored anywhere. The
experimental work is carried out using e-BioSign database which
makes use of 5 devices in total. The systems considered in this
work are based on Dynamic Time Warping (DTW), an elastic
measure over the selected time functions. Sequential Forward
Features Selection (SFFS) is applied as a reliable way to obtain
an optimal time functions vector over a development subset of
users of the database. The results obtained over the evaluation
subset of users of the database show a similar performance for
both Standard and Secure Systems. Therefore, the use of a Secure
System can be useful in some applications such as banking in
order to avoid the lost of important user information against
possible external attacks.This work was supported in part by the Project Bio-Shield (TEC2012-34881), in part by Cecabank e-BioFirma Contract, in part by the BEAT Project (FP7-SEC-284989) and in part by Catedra UAM-Telefonica
Dynamic Biometric Signature - an Effective Alternative for Electronic Authentication
The use of dynamic biometric methods for the authentication of people provides significantly greater security than the use of the static ones. The variance of individual dynamic properties of a person, which protects biometric methods against attacks, can be the weak point of these methods at the same time.This paper summarizes the results of a long-term research, which shows that a DBS demonstrates practically absolute resistance to forging and that the stability of signatures provided by test subjects in various situations is high. Factors such as alcohol and stress have no influence on signature stability, either. The results of the experiments showed that the handwritten signature obtained through long practice and the consolidation of the dynamic stereotype, is so automated and stored so deep in the human brain, that its involuntary performance also allows other processes to take place in the cerebral cortex. The dynamic stereotype is composed of psychological, anatomical and motor characteristics of each person. It was also proven to be true that the use of different devices did not have a major impact on the stability of signatures, which is of importance in the case of a blanket deployment.The carried out experiments conclusively showed that the aspects that could have an impact on the stability of a signature did not manifest themselves in such a way that we could not trust these methods even used on commercially available devices. In the conclusion of the paper, the possible directions of research are suggested
Dynamic Biometric Signature - an Effective Alternative for Electronic Authentication
The use of dynamic biometric methods for the authentication of people provides significantly greater security than the use of the static ones. The variance of individual dynamic properties of a person, which protects biometric methods against attacks, can be the weak point of these methods at the same time.
This paper summarizes the results of a long-term research, which shows that a DBS demonstrates practically absolute resistance to forging and that the stability of signatures provided by test subjects in various situations is high. Factors such as alcohol and stress have no influence on signature stability, either. The results of the experiments showed that the handwritten signature obtained through long practice and the consolidation of the dynamic stereotype, is so automated and stored so deep in the human brain, that its involuntary performance also allows other processes to take place in the cerebral cortex. The dynamic stereotype is composed of psychological, anatomical and motor characteristics of each person. It was also proven to be true that the use of different devices did not have a major impact on the stability of signatures, which is of importance in the case of a blanket deployment.
The carried out experiments conclusively showed that the aspects that could have an impact on the stability of a signature did not manifest themselves in such a way that we could not trust these methods even used on commercially available devices. In the conclusion of the paper, the possible directions of research are suggested