Blood veins are formed during the first eight weeks of gestation in a chaotic manner, influenced by environment in a mother’s womb. This is why vein pattern is unique to each individual, even to twins. Veins grow with a person’s skeleton, and while capillary structures continue to grow and change, vascular patterns are set at birth and do not change over the course of one’s lifetime.
To scan the veins, an individual’s hand is placed on the hand guide (the plastic casing of the scanner device) and the vein pattern is captured by lighting the hand with near-infrared light. Veins contain deoxidized hemoglobin, an iron-containing pigment in the blood that carried oxygen through the body. These pigments absorb the near-infrared light and reduce the reflection rate causing the veins to appear as a black pattern.
An individual’s scanned palm vein data (biometric template) is encrypted for a protection and registered along with the other details in his/her profile as a reference for future comparison.