Biometrics

5. Conclusions

This article discusses challenges in biometric authentication, with a particular focus on privacy-preserving ones. We highlight the main advantages of biometric authentication as well as the risks that it brings along. We then list the most dangerous threats against privacy-preserving BAS and discuss possible attack strategies to undermine the privacy of a BAS. Finally, we identify possible directions to mitigate the highlighted threats, providing both the advantages and the disadvantages of the proposed methods. The practicality of privacy-preserving biometric authentication systems is by itself a great motivation for finding solutions to the security and privacy challenges connected to the employment of biometrics in authentication systems.