15-02-2013, 11:30 AM
Retinal scan & Palm scan
[attachment=51003]
Principles of retina biometrics
Retina recognition technology captures and analyzes the patterns of blood vessels on the thin nerve on the back of the eyeball.
Retinal pattern of eye has its own totally unique pattern of blood vessels even the eyes of identical twins are distinct.
Retina stable over a person's lifetime, it can be affected by disease such as diabetes, high blood pressure, and autoimmune deficiency syndrome.
The device used infrared light to illuminate the blood vessel pattern of the retina. The advantage of infrared light is that the blood vessel pattern in the retina can ‘absorb’ such light much faster than other parts of the eye tissue.
History of Retinal recognition
There are two famous studies Dr Carleton Simon and Dr Isodore Goldstein in 1935 that have confirmed the uniqueness of the blood vessel pattern found in the retina and describes how every retina contains a unique blood vessel pattern.
The second study was conducted in the 1950s by Dr Paul Tower. He discovered that - even among identical twins - the blood vessel patterns of the retina are unique and different.
Advantages of Retina Recognition
The Blood Vessel: The blood vessel pattern of the retina rarely changes during a person’s life (unless he or she is afflicted by an eye disease such as glaucoma, cataracts, etc).
Less computer memory: The size of the actual template is only 96 bytes, which is very small by any standards. In turn, verification and identification processing times are much shorter than they are for larger files.
Disadvantages of retina recognition
The most relevant weaknesses of retinal recognition are:
The public perceives retinal scanning to be a health threat; some people believe that a retinal scan damages the eye.
User unease about the need to position the eye in such close proximity of the scanner lens.
Successful retinal scanning demands the highest level of user motivation and patience.
Optional specifications
Patented silicone membrane to enhance biometric data capture from dry fingers and palms
Adaptor for use in the L SCAN Cabinet
Foot pedal with USB interface adaptor that connects directly to the PC
L SCAN Essentials SDK
(supported under Windows Vista and Windows XP)
Power supply
100-240V AC auto-adjusting, 50-60 Hz,
40 W max.
[attachment=51003]
Principles of retina biometrics
Retina recognition technology captures and analyzes the patterns of blood vessels on the thin nerve on the back of the eyeball.
Retinal pattern of eye has its own totally unique pattern of blood vessels even the eyes of identical twins are distinct.
Retina stable over a person's lifetime, it can be affected by disease such as diabetes, high blood pressure, and autoimmune deficiency syndrome.
The device used infrared light to illuminate the blood vessel pattern of the retina. The advantage of infrared light is that the blood vessel pattern in the retina can ‘absorb’ such light much faster than other parts of the eye tissue.
History of Retinal recognition
There are two famous studies Dr Carleton Simon and Dr Isodore Goldstein in 1935 that have confirmed the uniqueness of the blood vessel pattern found in the retina and describes how every retina contains a unique blood vessel pattern.
The second study was conducted in the 1950s by Dr Paul Tower. He discovered that - even among identical twins - the blood vessel patterns of the retina are unique and different.
Advantages of Retina Recognition
The Blood Vessel: The blood vessel pattern of the retina rarely changes during a person’s life (unless he or she is afflicted by an eye disease such as glaucoma, cataracts, etc).
Less computer memory: The size of the actual template is only 96 bytes, which is very small by any standards. In turn, verification and identification processing times are much shorter than they are for larger files.
Disadvantages of retina recognition
The most relevant weaknesses of retinal recognition are:
The public perceives retinal scanning to be a health threat; some people believe that a retinal scan damages the eye.
User unease about the need to position the eye in such close proximity of the scanner lens.
Successful retinal scanning demands the highest level of user motivation and patience.
Optional specifications
Patented silicone membrane to enhance biometric data capture from dry fingers and palms
Adaptor for use in the L SCAN Cabinet
Foot pedal with USB interface adaptor that connects directly to the PC
L SCAN Essentials SDK
(supported under Windows Vista and Windows XP)
Power supply
100-240V AC auto-adjusting, 50-60 Hz,
40 W max.