ABSTRACT
In “conventional” biometric systems, there are many situations
where it is important to consider security and privacy issues.
For example, biometric-related information is not secretly stored
or transmitted, which implies that compromise of biometric
information would lead to unauthorized access and information
misuse, and the enrolled biometric data are not revocable, which
implies that compromise of biometric data will result in permanent
lost of biometric traits. Since the biometric data are permanently
associated with a user and the biometric resources of a user
are limited, the legitimate user would not be able to regenerate
another set of valid biometric identifiers. The security and privacy of
biometric data have gained tremendous interest among researchers;
however, serious criticisms against the biometric technology have
not been addressed satisfactorily. Thus, we devote a considerable
amount of time to discuss the security and privacy of biometric data
as well as the existing solutions to the problems in this chapter.