Principles of retina biometrics
The blood vessels at the back of the eye have a unique pattern, from eye to eye and person to person.
How does retina biometrics work
Retina scans require that the person removes their glasses, place their eye close to the scanner, stare at a specific point, and remain still, and focus on a specified location for approximately 10 to 15 seconds while the scan is completed. A retinal scan involves the use of a low-intensity coherent light source, which is projected onto the retina to illuminate the blood vessels which are then photographed and analysed. A coupler is used to read the blood vessel patterns.
A retina scan cannot be faked as it is currently impossible to forge a human retina. Furthermore, the retina of a deceased person decays too rapidly to be used to deceive a retinal scan.
A retinal scan has an error rate of 1 in 10,000,000, compared to fingerprint identification error being sometimes as high as 1 in 500.
Issues with retina systems
Enrollment and scanning are intrusive and slow.
Benefits of retina biometric systems
- Highly accurate
Applications of retina biometrics
Retina biometrics systems are suited for environments requiring maximum security, such as Government, military and banking. Retina biometric systems have been in use for military applications since the early seventies