Iris recognition has been done by many researchers in last many decade. Iris recognition plays an important role to improve efficiency in biometric identification system due to its reliability in highly secured areas. Such as In Airports And Harbors, Access Control In Laboratories And Factories traditional issue is focused on full fingerprint images matching and face detection are used for identification of humans, but iris recognition system is more reliable and gives more accurate results for the identification. Iris recognition works on patternrecognition. The iris is an externally visible, yet protected organ whose unique epigenetic pattern remains stable throughout adult life. These characteristics make it very attractive for use as a biometric for identifying individuals. In iris recognition the signature of the new iris pattern is compared against the stored pattern after computing the signature of new iris pattern and identification is performed. This paper discusses different techniques used for Iris Recognition.