Iris scanning is a biometric technology that uses the unique patterns in a person's iris, the colored part of the eye, for identification. A camera captures a high-resolution image of the iris, which is then analyzed to create a digital template. This template can be compared against a database to verify a person's identity. Iris scanning is considered highly accurate and secure because the patterns in the iris are unique to each individual and remain stable over time. It is used in various applications, including security systems, mobile devices, and border control, to enhance safety and streamline identification processes.