Convenient and well hidden.
Palm vein recognition is based on the absorption of infrared rays (heat rays) in the blood. The sensor emits near infrared radiation in the direction of the palms. The oxygen-reduced blood in the veins absorbs the infrared radiation. The sensor's camera creates an image of the vein pattern, encodes the image while still in the sensor (AES-256), sends the image to the controller, which converts it into a template of about 0.8 kB. The template is stored in a database (for identification) or on a card or tag (for verification).
The human palm vein pattern is extremely complex and is well protected from abuse and manipulation inside the body. The position of the veins remains unchanged throughout life and is different for each person. Skin impurities or superficial injuries have no influence. The palm vein recognition ideally combines the comfort of fingerprint recognition with the security level of iris recognition.