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Iris Scan
Iris scanning is a method of biometric identification; pattern recognition is used to determine the identity of the subject.
Iris scans create high-resolution images of the irides of the eye; IR illumination is used to reduce specular reflection from the cornea. The iris itself is a "good subject" for biometric identification, because it is an internal organ that is well protected, it is mostly flat and it has a fine texture that is unique even for identical twins.
Iris scans can be done regardless of whether the subject is wearing contact lenses or glasses. However, it is necessary for the system to take eye lids and eye lashes into account; both can obscure the necessary parts of the eye and cause false information to be added into automated systems.
Iris scans are extremely accurate.
(See also iris recognition.)
Index of related articles:
Biometric security overview
Biometrics Glossary
Characteristics of successful biometric identification methods
Biometric identification systems
Biometric technology on the leading edge
Biometric identification - advantages
Biometric security and business ethics
Biometric authentication: what method works best?
Iris Recognition
Iris Scan
