Flosi Retinal Scan False Positive?

Healinghands2 · #1 (**permalink**) 11-03-2008, 02:59 PM

Is it possible that if you get a retinal scan after you start wearing Flosi contacts you could be falsely identified as a bad guy?

bestpriceglasses · #2 (**permalink**) 04-18-2009, 05:19 AM

i could not get u.hw is it possible to scan retina and how it works.will u please let me know in detail

SandiStix · #3 (**permalink**) 04-20-2009, 09:44 AM

Quote:

Originally Posted by Healinghands2

Is it possible that if you get a retinal scan after you start wearing Flosi contacts you could be falsely identified as a bad guy?

Here's what wikipedia has to say: "A retinal scan is a biometric technique that uses the unique patterns on a person's retina to identify them."

How it works: "A biometric identifier known as a retinal scan is used to map the unique patterns of a person's retina. The blood vessels within the retina absorb light more readily than the surrounding tissue and are easily identified with appropriate lighting. A retinal scan is performed by casting an undetectable ray of low-energy infrared light into a person’s eye as they look through the scanner's eyepiece. This beam of light outlines a circular path on the retina. Because retinal blood vessels are more sensitive to light than the rest of the eye, the amount of reflection fluctuates. The results of the scan are converted to computer code and stored in a database."

The article goes on to say "Although retinal patterns may be altered in cases of diabetes, glaucoma, [or] retinal degenerative disorders the retina typically remains unchanged from birth until death. Due to its unique and unchanging nature, the retina appears to be the most precise and reliable biometric. Advocates of retinal scanning have concluded that it is so accurate that its error rate is estimated to be only one in a million."

There for I don't think contact lenses will fool a retinal scan.

Healinghands2 · #4 (**permalink**) 10-07-2009, 04:37 PM

Quote:

Originally Posted by SandiStix

Here's what wikipedia has to say: "A retinal scan is a biometric technique that uses the unique patterns on a person's retina to identify them."

How it works: "A biometric identifier known as a retinal scan is used to map the unique patterns of a person's retina. The blood vessels within the retina absorb light more readily than the surrounding tissue and are easily identified with appropriate lighting. A retinal scan is performed by casting an undetectable ray of low-energy infrared light into a person’s eye as they look through the scanner's eyepiece. This beam of light outlines a circular path on the retina. Because retinal blood vessels are more sensitive to light than the rest of the eye, the amount of reflection fluctuates. The results of the scan are converted to computer code and stored in a database."

The article goes on to say "Although retinal patterns may be altered in cases of diabetes, glaucoma, [or] retinal degenerative disorders the retina typically remains unchanged from birth until death. Due to its unique and unchanging nature, the retina appears to be the most precise and reliable biometric. Advocates of retinal scanning have concluded that it is so accurate that its error rate is estimated to be only one in a million."

There for I don't think contact lenses will fool a retinal scan.

Thank you Sandi. That was a big help. Take care.