Due to the fact that biometrics, as an automatic means of human recognition, constitutes a relatively novel field of research (Jain et al., 2006), to date most efforts undertaken by the different parties involved in the development of this technology (researchers, industry, evaluators, etc.) have been mainly focused on the improvement of its performance (i.e. finding novel methods to obtain lower error rates) (Wayman et al., 2005; Cappelli et al., 2006). As a consequence, other important aspects closely related to this type of system such as the performance degradation effect known as ageing have been left partially uncovered (Jain et al., 2008).

Chapter Contents:

• 6.1 Introduction
• 6.2 Related works
• 6.3 The on-line signature long term database
• 6.4 Experimental protocol
• 6.5 Results
• 6.5.1 Ageing experiments
• 6.5.2 Template update experiments
• 6.6 Conclusions
• Acknowledgements
• References

Inspec keywords: digital signatures; geriatrics; biometrics (access control); image recognition

Other keywords: ageing; online signature; performance degradation; human recognition; biometrics

Subjects: Data security; Image recognition; Computer vision and image processing techniques