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Biometric Tech

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Submitted By nellson
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In this computer-driven era, identity theft and the loss or disclosure of data and related intellectual property are growing problems.
We each have multiple accounts and use multiple passwords on an ever-increasing number of computers and Web sites. Maintaining and managing access while protecting both the user's identity and the computer's data and systems has become increasingly difficult. Central to all security is the concept of authentication - verifying that the user is who he claims to be.
We can authenticate an identity in three ways: by something the user knows (such as a password or personal identification number), something the user has (a security token or smart card) or something the user is (a physical characteristic, such as a fingerprint, called a biometric). (For more on authentication All three authentication mechanisms have drawbacks, so security experts routinely recommend using two separate mechanisms, a process called two-factor authentication. But implementing two- factor authentication requires expensive hardware and infrastructure changes. Therefore, security has most often been left to just a single authentication method. Passwords are cheap, but most implementations offer little real security. Managing multiple passwords for different systems is a nightmare, requiring users to maintain lists of passwords and systems that are inevitably written down because they can't remember them. The short answer, talked about for decades but rarely achieved in practice, is the idea of single sign-on. .
Using security tokens or smart cards requires more expense, more infrastructure support and specialized hardware. Still, these used to be a lot cheaper than biometric devices and, when used with a PIN or password, offer acceptable levels of security, if not always convenience.
Biometric authentication has been widely regarded as the most foolproof - or at least the hardest to forge or spoof. Since the early 1980s, systems of identification and authentication based on physical characteristics have been available to enterprise IT.
These biometric systems were slow, intrusive and expensive, but because they were mainly used for guarding mainframe access or restricting physical entry to relatively few users, they proved workable in some high-security situations. Twenty years later, computers are much faster and cheaper than ever.
This, plus new, inexpensive hardware, has renewed interest in biometrics.

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