Working of Iris Scanner:
An iris scanner uses two stages to identify the iris of the eyes. These are Enrollment and Verification.
Enrollment – Taking a snapshot of your eye:
This is the first stage of iris scanning. If you want to identify someone by iris scan then we have to store a snapshot of his or her eye into your iris-scanning system. So, each person must go through one time photographing of their eyes. This photographing procedure is endorsed in standard lighting and invisible infrared light. Infrared light is used in night vision gadgets that have long-wavelength as compared to other visible light spectrums. An iris scan system of infrared light helps to recognize the unique pattern of darker eyes more accurately, which is more challenging to do in normally visible light spectrums.
After taking a snapshot of the iris, system software processes it and identifies around 200 unique features in every store human eye image (this unique feature is five times more than a fingerprint scanning system). The computer system of the iris scanner stores this information with some unique value numbers along with specific iris codes. The enrollment step is completely automatic and it takes less than five minutes.
Verification – Confirmation of the authenticity of the eye:
Once the snapshot is stored in the database, your identification process by using iris becomes easy and hassle-free. The person just needs to stands in front of an iris scanner connected to the database. The scanner again takes the picture of the iris and matches it with the store image. The system quickly analyzes the resulting image, extracting an iris code from it. It starts the comparison or matching process by comparing thousands, or even millions of stored iris codes available in the database. If the scanned iris image code matches with one of the stored codes entered in the database then the person is positively identified otherwise the taken snapshot is not familiar to the system, or the person is merely impersonating.
An iris scanner has three main components:
- Processing unit
Camera: The camera unit is responsible to take snapshots or images of the iris. These cameras are specifically designed to work with infrared light.
Processing unit: The processing unit is the central point of the iris scanning system. After taking the picture of the iris camera sends it to the processing unit. Here present software converts the digital image into some specific iris codes to store it in a database or compare it with pre-stored data.
Database: This unit is a kind of memory in s iris-scanning system. Whatever data you want to store in the system is, here it is being stored.