Iris Recognition Technology The IrisIris had many characteristics that are used to distinguish one iris from another. There has been no genetic influence during the development of the iris, this process is known as "chaotic morphogenesis" and will occur during the seventh month of gestation. Twins will also have different iris types. The iris is attached behind the eyelid and cornea and is aqueous, which means that unlike other biometric data such as fingerprints, etc. The iris will not change with age but will always remain constant until death. The use of contact lenses and glasses will have little effect on the representation of the iris and this will not hinder the recognition technology. The image below will show the variation of the irises. Figure 1: Collage of irises 6 No two irises will be alike, once an iris is formed it will remain unchanged for life. This iris is very difficult to fake and the user does not need any physical contact with the device while acquiring the image. Iris recognition process: The iris acquisition procedure in the biometric system takes place in three steps.1. Capture the image2. Define the position of the iris and optimize the image3. Image storage and comparison.1. Capturing the Image The iris image is simply captured with the standard camera using both visible and infrared light via a manual or automated process. The camera is positioned between three and a half inches and one meter long to capture the image. In achieving the manual process, the user has to adjust the camera to focus on the iris which must be between six and twelve inches of the camera. This process is more manual and it's all......half of paper......are errors. The point at which the FAR and FRR are equal is known as the crossover error rate (CER). If the CER value is lower the system will be more accurate and reliable. If the Hamming distance is .342 in iris technology, then it is a nominal CER. Using the system: Using the iris technology is very fast. Capturing and testing images is very fast and requires some training. Glasses must be removed when registering in the recognition system to ensure that the best image is captured without reflections from the glasses or lenses. Comparing the real-time iris code to the iris code recorded in the database may seem like a complex operation. amount of data to process, but getting to reality this will take very few seconds. The comparison speed is the processor speed and does not depend on the size of the database.