This chapter will explore some of the limitations and difficulties which may be experienced specifically in the investigation and analysis of physical ageing issues in biometric systems. Considerable advances have been made in recent years by researchers seeking to investigate and explore the physical ageing process and its effects on most of the common biometric modalities such as iris, signature, fingerprint, voice and face. However, there are several significant problems which can limit a comprehensive age progression analysis in studying ageing effects, and which indeed can also lead to apparently inconsistent conclusions about the effect of age progression on performance. Thus, in this chapter, some of the most important limitations which challenge research in this area will be investigated and explored, while some suggestions will also be presented about how to manage these issues in the analysis of physical ageing in biometric systems.

Chapter Contents:

• 15.1 Introduction to physical ageing effects in biometric systems
• 15.2 Limitations in the analysis of physical ageing effects in biometric systems
• 15.2.1 Age
• 15.2.2 Biometric data
• 15.3 Experimental infrastructure
• 15.3.1 Biometric databases
• 15.3.2 Biometric data processing
• 15.3.3 Biometric data classification and performance evaluation
• 15.4 Investigating ageing issues
• 15.4.1 Effects of age-bands
• 15.4.2 Managing age-band effects
• 15.5 Database issues and biometric data quality
• 15.5.1 Database effects in terms of biometric data quality
• 15.5.2 Managing database effects in terms of biometric data quality
• 15.6 Database issues and biometric features
• 15.6.1 Database effects in terms of biometric features
• 15.6.2 Managing database effects in terms of biometric features
• 15.7 Conclusions
• References

Inspec keywords: biometrics (access control); age issues

Other keywords: ageing effect analysis; physical ageing issues; biometric modalities; biometric systems; comprehensive age progression analysis

Subjects: Economic, social and political aspects of computing; Data security