Iris Patterns

1717 Words7 Pages
Sarah Heimann
Mr. Hickey
PLS 3410-01
14 November 2017
Iris Patterns As time moves along and society becomes more technological, more techniques of solving crime with advanced technology are practiced. Not only can we solve crime with fingerprints and behavioral characteristics such as gait, voice, signature and odor, but we can also solve crime with the use of iris recognition. Iris recognition is a biometric identification method of identifying individuals based on their iris patterns. It has slowly been emerging, since 1994 into biometric technology as an alternate means to do the same job as fingerprinting. This paper will go into quite a bit of detail on the iris recognition system and explain the development of the iris and what the iris’s function is for the eye and answer the questions that follow: are there any changes to the iris between birth and adulthood or even after death, how does the iris recognition system operate and what countries, if any, are currently exercising the use of the iris recognition system and how is it working out for them, is the iris recognition system reliable and do contacts and glasses effect the system in any way, and finally, can iris recognition be applied to an iris after death?
First, one may be wondering what the function of the iris is in the eye. The iris is the plainly visible colored ring-shaped membrane behind the cornea made entirely of connective tissues, smooth muscle fibers and pigments. It begins to form in the third month of gestation (development in the womb). The pigments of the eye are made of melanin (the same pigment that gives skin its color). The amount of pigment in the eye is what gives the eye its color. Lack of pigment gives one no color at all. These are the pink eyes of albinisms. Very little pigment gives the eye a blue color and then in increasing amounts of pigment give one green, hazel, and finally brown. The iris also controls the amount of light that reaches the retina. It has an adjustable round opening in the center that is called a pupil. It is responsible for controlling the diameter and size of that pupil. With the help of the pupil, the iris’s function is to regulate the amount of light that gets into the eye. Too much or not
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