Iris Recognition

In different ethnic groups, irises vary in color. The irises of East Asians contain more pigments and are brownish, appearing black from a distance. On the other hand, the irises of Caucasians have less pigment and are light gray or light blue. The surface of the iris has uneven folds, and according to scientific research, these folds, like fingerprints, are unique to each individual and do not change. Electronic code door locks have been developed based on this iris characteristic. When the user approaches the scanning hole and the scanning device scans the iris image, it compares it with the pre-set image. If they match, the door lock automatically opens.

The iris is a thin, pigmented, and ring-shaped membrane in the front part of the eye that is composed of conjunctival tissue cells, muscle fibers, and so on, and contains the pupil. The amount of pigment in the iris determines the color of the eye. The iris used to be called the iris diaphragm. It is extremely rare for two people's iris patterns to be the same. (The iris is a unique organ in the human body, located inside the eye.) The human iris is formed between 6 and 18 months after birth and does not change for life. The iris tissue around the pupil of the eye has a complex structure and can be a unique identifier of individual biological characteristics.