Biometrics can be seen as an attractive solution to user authentication as the relationship between the authenticator and the user is very strong. It has become one of the well-known and reliable user authentication system as substitute to password-based authentication ones. Biometric techniques have been developed for a machine-based verification of the identity of a person. The use of biometric techniques, such as face, fingerprint, iris, ear and others is a solution for obtaining a secure personal authentication method.

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Some of the biometric technology or device are being utilised in our everyday life whether we are aware or not.

 

For example:

(a) if we travel to foreign countries by plane, all major airports have now imposed biometric technology, such as iris recognition (as in United Kingdom (UK));

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(b) in order to gain access into a building, it is now equipped with biometric system on a door/entrance, such as fingerprint technology;

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(c) in a car, where it uses biometric technology with Bluetooth or entertainment systems to unlock a vehicle, such as voice recognition;

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(d) in a blood banks, data of blood donors are being stored digitally, where donors are using biometric technology to access their essential information, such as fingerprint or iris recognition; and

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(e) in an institution (school/college/university), besides gaining entry to a building, biometric data is also used for recording attendance, borrowing library books or even paying for meals.

 

Nonetheless, there are many more applications of biometric systems for other specific purposes.