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Why use biometrics authentication

Home Education Why use biometrics authentication

By Dr Risco Mutelo
The primary aim of Biometrics is to solve the limitations of the old traditional access controls to humans. More traditional means of access control include token-based identification systems, such as a driver’s license or passport, and knowledge-based identification systems, such as a password or personal identification number. In particular, traditional methods have the following limitations:

Weak passwords are easy to guess (by non legitimate user) and difficult passwords may be hard to remember (by a legitimate user). This could lead to a security breach where personal or business secrets are stolen by an outsider.

Sharing credentials is generally common with colleagues although this is forbidden by policy. A computer user shares his or her password with a colleague who requires access — even though, in most organisations (and in many security-related laws and regulations), this is forbidden by policy.

User convenience may not be possible using traditional security techniques. For example, users maintaining different passwords for different applications may find it challenging to recollect the password associated with a specific application.

Lost key cards can easily be obtained by non legitimate users. Often they have the name of the organisation on them, so it’s like finding a key with an address on it, permitting the person who found it a free after-hours tour of the organisation.

Sophisticated criminals have acquired great expertise in circumventing the old identification systems. This has resulted in a global rise of identity fraud and theft and the use of sophisticated means to evade detection.

By using biometrics it is possible to establish an identity based on `who you are’, rather than by `what you possess’ (e.g., an ID card) or `what you remember’ (e.g., a password). Biometrics is based on physiological and behavioural characteristics. Physiological characteristics include fingerprints, hand geometry, facial image, retina and iris. The behavioural characteristics are actions carried out by a person in a characteristic way and include signature, voice pattern, keystroke sequences and gait (the body movement while walking).

Dr Risco Mutelo is a Namibian who currently works for the Bank of America stationed in London where he studied Biometrics Engineering at New Castle University in the United Kingdom.