Signature Forgery and the Forger – An Assessment of Influence on Handwritten Signature Production

Alex Morton, William Reid, Colin Buntin, Michael Brockly, Joe O'Neill, Richard Guest

Abstract


Signatures are widely used as a form of personal authentication. Despite ubiquity in deployment, individual signatures are relatively easy to forge, especially when only the static ‘pictorial’ outcome of the signature is considered at verification time. In this study, we explore opinions on signature usage for verification purposes, and how individuals rate a particular third-party signature in terms of ease of forgeability and their own ability to forge. We examine responses with respect to an individual’s experience of the forgeability/complexity of their own signature. Our study shows that past experience does not generally have an effect on perceived signature complexity nor the perceived effectiveness of an individual to themselves forge a signature. In assessing forgeability, most subjects cite the overall signature complexity and distinguishing features in reaching this decision. Furthermore, our research indicates that individuals typically vary their signature according to the scenario but generally little effort into the production of the signature.

Keywords


Signature; biometrics; forgeability; user acceptance signature; biometrics; user acceptance

References


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R. Guest and O. Miguel-Hurtado, “Enhancing static biometric signature verification using speeded-up robust features,” in Proceedings of the 2012 IEEE International Carnahan Conference on Security Technology (ICCST), 2012, pp. 213–217.

H. Harralson and L. Miller, Developments in Handwriting and Signature Identification in the Digital Age, Routledge, New York, 2014.

M. Fairhurst, E. Kaplani, and R. Guest, “Complexity measures in handwritten signature verification,” in Universal Access in Human-Computer Interaction, Stephanidis, Constantine, Eds. Lawrence Erlbaum Associates, ISBN 0-8058-3609-8, 2001, pp. 305–309.

L. C. Alewijnse, C. E. van den Heuvel, R. Stoel, and K. Franke, “Analysis of signature complexity,” in Proceedings of the 14th Conference of the International Graphonomics Society (IGS 2009), Dijon, 2009.


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