Iris scanning is an automated method of biometric identification that uses mathematical pattern recognition of images of an individual’s iris, either from one or both eyes.
To obtain these images, an authentication device scans the iris—which is the thin, colored ring of the eye that opens and shuts the pupil like a camera shutter, thus regulating the amount of light that reaches the retina.
Each individual has a uniquely different and highly intricate iris pattern in each eye, which is completely developed at a very young age and remains unchanged throughout one’s lifetime. This, combined with the fact that iris patterns are almost impossible to replicate, makes iris scanning one of the most secure and reliable biometric techniques available.
As a result, it is widely being used for access control in pharmaceutical dispensing, border control and airport security.