Isn't it possible for these blood vessels to change over time? Blood vessels can pop, can't they?Danger said:I'm not sure about the corneal ones, but the retinal scanners read the pattern of blood vessels in the back of the eye. Like fingerprints, no two people's are the same. If 'corneal' ones exist, I suspect that it's a misnomer. They probably read the specific colour pattern of the iris. I don't really know that much about them, though.
True, but I suspect that they still maintain position, regardless of whether or not they're damaged. Someone from Biology should deal with that one. Also, multi-point matching is probably used, the same as with fingerprints. A cut, blister, wart, etc. doesn't prevent a match based upon the undamaged part of the finger. As far as that goes, though, I haven't seen anything about retinal scanners lately. Maybe they were phased out for just that reason.dav2008 said:Isn't it possible for these blood vessels to change over time? Blood vessels can pop, can't they?
A retina/cornea scanner is a type of biometric technology that uses infrared light to scan and capture images of the retina or cornea of the eye. The unique patterns and characteristics of these parts of the eye are then used to create a digital map, which can be used for identification purposes.
Retina/cornea scanners have a high level of accuracy, with error rates as low as 1 in 1.5 million. This is because the patterns of the retina and cornea are highly unique and do not change over time, making them a reliable form of biometric identification.
Retina/cornea scanners are different from fingerprint scanners in that they use different parts of the body for identification. Fingerprint scanners use the patterns on the fingertips, while retina/cornea scanners use the patterns in the eye. Additionally, retina/cornea scanners tend to have a higher level of accuracy compared to fingerprint scanners.
Retina/cornea scanners are considered safe for use as they do not emit harmful radiation. The infrared light used in these scanners is non-invasive and does not cause any damage to the eyes. However, individuals with certain eye conditions, such as cataracts, may not be able to use these scanners.
Yes, retina/cornea scanners are currently being used in various real-world applications, such as airport security, border control, and high-security facilities. They are also being used in mobile devices, such as smartphones, for biometric authentication. However, their use is not as widespread as other forms of biometric technology, such as fingerprint or facial recognition.