For Example : When you use an ATM card, the machine will verify the validation of the card then the machine will request for a pin number. This is where the authentication process takes place.
AUTHENTICATION
METHODS OF AUTHENTICATION
There are two commonly used authentication methods, which are biometric device and callback system.
Biometric device is a device that translates personal characteristics into a digital code that is compared with a digital code stored in the database. Callback system refers to the checking system that authenticates the user.
BIOMETRIC DEVICES Fingerprint Recognition
In order to prevent fake fingers from being used, many biometrics fingerprint systems also measure blood flow, or check for correctly arrayed ridges at the edges of the fingers.
Facial Recognition
Facial recognition analyses the characteristics of an individual's face images captured through a digital video camera.
Hand Geometry Scanning
Hand scanning involves the measurement and analysis of the shape of one's hand. Unlike fingerprints, the human hand isn't unique. Individual hand features are not descriptive enough for identification.
Iris Scanning
Iris scanning analyses the features that exist in the coloured tissues surrounding the pupil which has more than 200 points that can be used for comparison, including rings, furrows and freckles.
Retinal Scanning
Retinal biometrics involves the scanning of retina and analysing the layer of blood vessels at the back of the eye.
Voice Recognition
Voice recognition system compares a person’s live speech with their stored voice pattern.
Signature Verification System
Signature verification system uses special pen and tablet. After pre-processing the signature, several features are extracted.
CALLBACK SYSTEM
The callback system is commonly used in the bank operation and business transaction.
WHY IS AUTHENTICATION IMPORTANT?
Authentication is important in order to safeguard against the unauthorised access and use.