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United States
I’ll do it, but only if you’ll help


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Ric:

Iris Scans use ordinary photographic techniques (albeit infra-red), but have a very high failure rate: http://www.theregister.co.uk/2004/05/07/... ... which means that, statistically, 2.5 million out of the British population would go unrecognised.

Retina Scans, on the other hand, are far more accurate: http://www.wisegeek.com/how-does-a-retin...

Retinal Scanners would be needed to provide any biometric security at all. Retinal Scanners use lasers to see through to the retina. And they can give you watery eyes: http://www.theregister.co.uk/2003/01/08/...

More spin, I'm afraid. For "Iris Scanners" (OK) read "Retinal Scanners" (NOT OK)
Veronica Chapman, 12 years ago.

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