  There is an exponential increase in portable electronic devices with
biometric security mechanisms, in particular fingerprint biometric. A person
has a limited number of fingerprints and it remains unchanged throughout his
lifetime, once leaked to the adversary, it leaks for a lifetime. So, there is a
need to secure the biometric template itself. In this survey paper, we review
the different security models and fingerprint template protection techniques.
The research challenges in different fingerprint template protection techniques
are also highlighted in respective sections of the paper. This survey provides
a comprehensive study of template protection techniques for fingerprint
biometric systems and highlights the challenges and future opportunities.
