ABSTRACT
The iris provides one of the most stable biometric signals for use in identification, with a distinctive texture
that is formed before birth and remains constant throughout life unless there is an injury to the eye.
The striations, filaments, and rings that make up the iris pattern are unique to each person, and the left
eye differs from the right eye. Because of its uniqueness to an individual, an iris can provide identification with
very high confidence, even with large databases. Compared with other biometric features such as face and
fingerprint, iris patterns are more stable and reliable. Iris recognition systems are noninvasive, but require a
cooperative subject.