The discussion centers around the existence and functionality of retina and cornea scanners, exploring whether such devices are real or fictional, as often depicted in movies. Participants inquire about the specific characteristics these scanners would analyze to differentiate between individual eyes, as well as seeking more information on the topic.
Participants do not reach a consensus on the existence of cornea scanners, with some expressing skepticism while others suggest that iris scanners may serve a similar purpose. The discussion remains unresolved regarding the specifics of how retinal scanners function and the implications of changes in blood vessel patterns.
Participants acknowledge limitations in their knowledge about the technology and its applications, indicating a need for further exploration of the topic. There are also unresolved questions regarding the stability of blood vessel patterns over time and the accuracy of biometric matching methods.
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?