Security of computer data, information and computer
networks has become very important in today’s world. A great
amount of resources are being invested to build secure
systems. Biometric systems are a secure way to authenticate a
person and to grant access to services or a system only to
legitimate users. [1] In this computer-driven era, identity theft
and the loss or disclosure of data and related intellectual
property are having upward trend. Users have many accounts
and use multiple passwords on an ever-increasing number of
computers and Web sites. Preserving and managing access
while protecting the user's identity, the data and computer
systems has become a difficult task. At the heart of all security
systems is the concept of authentication- verifying that the
user is who he claims to be. [2]
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