Dynamic Signature Verification on Smart Phones

  • Ram P. Krish
  • Julian Fierrez
  • Javier Galbally
  • Marcos Martinez-Diaz
Part of the Communications in Computer and Information Science book series (CCIS, volume 365)


This work is focused on dynamic signature verification for state-of-the-art smart phones, including performance evaluation. The analysis was performed on database consisting of 25 users and 500 signatures in total acquired with Samsung Galaxy Note. The verification algorithm tested combines two approaches: feature based (using Mahalanobis distance) and function based (using DTW), and the results are shown in terms of EER values. A number of experimental findings associated with signature verification in this scenario are obtained, e.g., the dominant challenge associated with the intra-class variability across time. As a result of the algorithm adaptation to the mobile scenario, the use of a state-of-the-art smart phone, and contrarily to what has been evidenced in previous works, we finally demonstrate that signature verification on smart phones can result in a similar verification performance compared to one obtained using more ergonomic stylus-based pen tablets. In particular, the best result achieved is an EER of 0.525%.


Biometrics dynamic signature verification smart phones Mahalanobis distance Dynamic Time Warping (DTW) 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Ram P. Krish
    • 1
  • Julian Fierrez
    • 1
  • Javier Galbally
    • 1
  • Marcos Martinez-Diaz
    • 1
  1. 1.Biometric Recognition Group - ATVS, EPSUniv. Autonoma de MadridSpain

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