Grey14, on 07 December 2011 - 09:14 PM, said:
What is the big deal about a iris scan? It is basicaly the same thing a a fingerprint. You all have no problems with the fingerprint aspect then why have issue with an iris scan. Some advantages an iris scan.
courtesy of wiki
It is an internal organ that is well protected against damage and wear by a highly transparent and sensitive membrane (the cornea). This distinguishes it from fingerprints, which can be difficult to recognize after years of certain types of manual labor.
The iris has a fine texture that—like fingerprints—is determined randomly during embryonic gestation. Like the fingerprint, it is very hard (if not impossible) to prove that the iris is unique. However, there are so many factors that go into the formation of these textures (the iris and fingerprint) that the chance of false matches for either is extremely low. Even genetically identical individuals have completely independent iris textures.
An iris scan is similar to taking a photograph and can be performed from about 10 cm to a few meters away. There is no need for the person being identified to touch any equipment that has recently been touched by a stranger, thereby eliminating an objection that has been raised in some cultures against fingerprint scanners, where a finger has to touch a surface, or retinal scanning, where the eye must be brought very close to an eyepiece (like looking into a microscope).
While there are some medical and surgical procedures that can affect the colour and overall shape of the iris, the fine texture remains remarkably stable over many decades. Some iris identifications have succeeded over a period of about 30 years.
This is just an added way beyond the finger print to be able to identify you and prove who you are.
Thanks for pointing out that it is an iris scan and not a retinal one.
I also recognize that it is the iris scan that makes me uneasy. Is it really necessary on top of the fingerprint? If the only reason is that it is needed in case her prints may be worn out after years of manual labour, I´ll take my chances.
The other statement makes me even more uncomfortable:
"An iris scan is similar to taking a photograph and
can be performed from about 10 cm to a few meters away.
There is no need for the person being identified to touch any equipment that has recently been touched by a stranger, thereby eliminating an objection that has been raised in some cultures against fingerprint scanners, where a finger has to touch a surface, or retinal scanning, where the eye must be brought very close to an eyepiece."
seems pretty bogus to me. Reading between the lines, they can identify you without you even being aware. At least with the fingerprint or retina you are aware you are being identified. Smells like BB to me!