Iris recognition is an automated method of biometric identification that uses mathematical pattern-recognition techniques on video images of one or both of the irises of an individual’s eyes, whose complex random patterns are unique, stable, and can be seen from some distance.

 

Retinal scanning is a different, ocular-based biometric technology that uses the unique patterns on a person’s retina blood vessels and is often confused with iris recognition. Iris recognition uses video camera technology with subtle near infrared illumination to acquire images of the detail-rich, intricate structures of the iris which are visible externally.

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