Disadvantages Of Iris Recognition

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Iris Recognition EPOKA UNIVERSITY 2015 By Renaldo Cobo Abstract System administrators on these days have increased the system secure. Authentication is an area where the security can be improved. Iris Recognition is one of the most security methods of identification and authentication due to the unique characteristics of iris of the eye. The authentication process starts after the image of the iris is captured by a camera, comparing the iris which is captured with the store version of the iris. This technology is easy to use, accurate, non-intrusive and difficult to forge. These properties make this amazing technology very useful nowadays. Iris recognition, comparing with other recognition methods such as fingerprint and face,…show more content…
These form of security that we are studying is biometric. Thisform of security requires information from a part of a human body. This is the only way that the person who is scanned can gain access to a restricted area. Biometric security provides higher level of security than other forms of security because of 2 advantages:  The user or person doesn’t need to keep something in his/her memory  The biometric which is researched stays with the user and doesn’t disappear easily. We have 2 types of biometric security:  Behavioural  Physiological A physiological biometric includes an user’s physical characteristics and a behavioural biometric includes an user’s behavioural characteristics. It is known that the most powerful biometrics are fingerprint recognition, face recognition and retina recognition. Algorithms used in Iris Recognition are divided into 3 steps:  Isolation (Iris isolated from the rest of the eye is called Isolation.)  Representation (Iris is represented into a small code. Iris code is represented by ‘0’ and ‘1’ bits. When the information is missing (partial iris recognition) ‘X’ bits are added instead of ‘0’ and ‘1’. We have an example in the figure below: Figure 2.An example of an incomplete iris code  The 3rd step is divided in two steps: A.…show more content…
Instead of complete iris recognition, the partial iris recognition is new. A lot of researchers are in the iris recognition field, but the most known is John Daugman who is so called ‘The Father of Iris Recognition”. The most efficient algorithm in Iris Recognition was created by Daugman and this algorithm is called Daugman’s Algorithm. As other algorithms, also the Daugman’s Algorithm follows a 3 steps process as we explained before. First steps or stage is the Isolation step, where the iris has to be isolated from the rest of the eye. The 2nd stage is the Representation stage, where the patterns within the iris are used to translate the iris into a code using ‘0’ and ‘1’ for black and white parts, and for the gray parts on the graphic are used ‘X’, that are for the unavailable information. The iris code is 2048 bits total in length. The 3rd step goes on in 2 ways. First is the enrolment where the iris is added to the database and then is the comparison where the iris code is compared with other iris codes, but one code at a time. If a part of the irises are equal, then the scanner confirms as the same iris, otherwise they are
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