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Vehicle: Car: Key
Retinal scanners   (0)  [vote for, against]
Retinal scanners have a great feature

The idea is to use retinal scanners as a method to lock/unlock/start cars as they have the added "feature" of not working when you are drunk/stoned and have bloodshot eyes. Oh ya, keeps you from loosing yer keys 2. There would be some temporary approval method to allow the valet to park yer def ride.
-- WhiteWiz, Mar 07 2004

Machines make lousy keepers. I want cars that can tell I'm feeling a life or death situation coming on and will allow me to drive off in any available car ... like that audi over there ...
-- dpsyplc, Mar 07 2004

If valets can override it, surely you can override it yourself if your eyes are saying "don't drive".
-- kropotkin, Mar 08 2004

I'm interested to know if bloodshot eyes have bloodshot retinas, also.
I would have to over-ride it by using one eye at a time, since when testing both together, I'm sure the scanner would easily detect crossed eyes.
-- Ling, Mar 08 2004

Retinal scanners match the pattern of veins in your retina to a known pattern, when your eyes are bloodshot the veins are noticeably swelled. This would depend a bit on your accuracy/grace margin.
-- WhiteWiz, Mar 08 2004

there are several patents on this idea already.
-- xaviergisz, Mar 08 2004

random, halfbakery