The Security is an Important aspect in a daily life. Whichever the system the security plays between vital. Iris based authentication system is essentially a pattern recognition technique that makes use of iris pattern, which are statistically unique, for the purposed of personal identification. In this system hamming distance recognition of iris pattern. The zigzag collarette area of the iris is selected for iris feature extraction because it captures the most important area of iris complex pattern and higher recognition rate is achieved. The proposed method is computationally effective as well as reliable. This project has been created to develop a biometric identification system though a man’s iris using a computer to perform the processing on the raw image.