Which biometric method uses the unique patterns of the retina?

Retinal scanning is a biometric method that analyzes the unique patterns of the retina, located at the back of the eye. This method utilizes infrared light to illuminate the retina and capture the intricate patterns of blood vessels that are unique to each individual. The complexity and uniqueness of these patterns make retinal scanning a highly reliable and secure method of biometric identification.

The strength of retinal scanning lies in its low false acceptance rate and high discrimination accuracy, which ensures that it can distinguish between individuals effectively. Additionally, the retina is well-protected within the eye, making it more difficult to copy or spoof compared to other biometric methods.

Other biometric methods mentioned, such as fingerprints, face recognition, and voice recognition, rely on different physiological or behavioral characteristics. Fingerprints are based on ridge patterns on fingertips, face recognition involves analyzing facial features, and voice recognition relies on vocal attributes. Each of these methods serves its purpose; however, they do not involve the unique retinal patterns that are the hallmark of retinal scanning.