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Biometric template protection: state-of-the-art, issues and challenges

Biometric template protection: state-of-the-art, issues and challenges

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User-Centric Privacy and Security in Biometrics — Recommend this title to your library

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Nowadays, biometric recognition represents an integral component of identity management and access control systems, replacing PINs or passwords. However, the wide deployment of biometric recognition systems in the past decades has raised numerous privacy concerns regarding the storage and use of biometric data. Due to the fact that the link between individuals and their biometric characteristics, e.g. fingerprints or iris, is strong and permanent, biometric reference data (templates) need to be protected in order to safeguard individuals' privacy and biometric systems' security. In particular, unprotected biometric templates can be abused to crossmatch biometric databases, i.e. tracking individuals without consent, and to launch presentation attacks employing specific inversion techniques. Technologies of biometric template protection offer solutions to privacy preserving biometric authentication, which improves the public confidence and acceptance of biometric systems. While biometric template protection has been an active research topic over the last 20 years, proposed solutions are still far from gaining practical acceptance. The existing gap between theory and practice, which results in a trade-off between privacy protection and recognition accuracy, is caused by numerous factors. To facilitate a standardized design and application of biometric template protection schemes, researchers have to solve several open problems. This chapter provides an overview of state-of-the-art technologies of biometric template protection and discusses main issues and challenges.

Chapter Contents:

  • 8.1 Introduction
  • 8.2 Biometric template protection
  • 8.2.1 Biometric cryptosystems
  • 8.2.2 Cancellable biometrics
  • 8.2.3 Multi-biometric template protection
  • 8.3 Issues and challenges
  • 8.3.1 Performance decrease in template protection schemes
  • 8.3.2 Data representation and feature alignment
  • 8.3.3 Standardization and deployments
  • 8.4 Conclusion
  • References

Inspec keywords: biometrics (access control); authorisation; data privacy

Other keywords: biometric characteristics; identity management; access control systems; privacy-preserving biometric authentication; biometric template protection; biometric systems security; privacy protection; biometric recognition systems; biometric databases

Subjects: Data security

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