An iris scan is a biometric technology that uses the unique patterns in a person's iris, the colored part of the eye, for identification. This method captures a high-resolution image of the iris, which is then analyzed to create a digital template. Because each person's iris patterns are distinct, iris scanning is considered a highly accurate form of identification. Iris scans are commonly used in security systems, such as airport access and smartphone unlocking. The process is quick and non-invasive, requiring only a few seconds for the scan to be completed. This technology enhances security by providing a reliable way to verify a person's identity.