• Question: Retinal Scanners
    2 replies, posted
What kind of conditions does an eye have to be in for one to work? Take the movie 'Minority Report', for example. Main character gets an eye transplant so that he won't be spotted by security cameras on the way to his destination, then pulls his old eyes out (which are in a bag) and scans them on a retinal scanner (or maybe it's an iris scanner: who knows) to get into his old place of employment. Thing is: those eyes had been dead for like a day or something. A retinal scanner works by registering the layout of blood vessels in your eye (which is specific only to you), however would there need to be blood pumping through them for this to work effectively? I'd assume it would use the refraction of red light associated with blood to tell where the blood vessels were, so if the blood had coagulated I'd assume it wouldn't work. Anyhow know for sure? Can't find the answer anywhere, and wikipedia isn't loading for me at the moment.
No, Just because a road isn't being used doesn't mean it won't show up on a roadmap If you know what I mean
[QUOTE=Tacosheller;24256228]No, Just because a road isn't being used doesn't mean it won't show up on a roadmap If you know what I mean[/QUOTE] As much as I appreciate a speedy reply, I'd REALLY love one with some scientific, logical reasoning behind it. I mean, depending on how it works (retinal scanning) it might NOT be able to scan a 'dead eye'. And I can't find out EXACTLY how it works at the moment, so I can't find out if it can or can't scan a dead eye. [editline]06:01PM[/editline] "During a retinal scan, the user must remove glasses, stare at a specific point, and hold their head still for the 10-15 seconds it takes to complete the scan. A retinal scan is very difficult to fake because no technology exists that allows the forgery of a human retina, and the retina of a deceased person decays too fast to be used to fraudulently bypass a retinal scan." AHHA! Got it!
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