Vein scan

Vein scan biometric technology can automatically identify a person from the patterns of the blood vessels in the back of the hand. The technology uses near-infrared light to detect vein vessel patterns. Vein patterns are distinctive between twins and even between a person’s left and right hand. Developed before birth, they are highly stable and robust, changing throughout one’s life only in overall size. The technology is not intrusive, and works even if the hand is not clean. It is commercially available.