retinaján

Retinaján is a term of Hungarian origin, often translated as "retinal scan" or "iris scan" in English. It refers to a biometric authentication method that involves analyzing the unique pattern of blood vessels at the back of a person's eye, specifically the retina. This pattern is formed during fetal development and is considered highly distinctive and stable throughout a person's life.

The process typically involves directing a low-level infrared light into the eye. This light causes the blood vessels in the retina to absorb more light, making their patterns visible. A specialized camera then captures an image of these patterns. This captured image is then processed to extract a unique digital template, which is stored for future comparison.

When authentication is required, the user again looks into the device, and a new retinal image is captured. This new image is compared against the stored template. If there is a sufficient match, the user is authenticated. Retinal scanning is known for its high accuracy and low false acceptance rate, making it a secure method for identification and access control. However, its implementation can be more complex and potentially intrusive compared to other biometric methods, and user acceptance can vary.