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it is like a finger print. this camera can scan an iris 40 feet away. they will install them in airports to help find missing kids and victims of human tracking. and patrick, what is your take on this. scanning our iris, is that the same as finger printing. it is much better. you can do an iris match in role time. catch a photoof their iris, you can match that to a idate base and have a useful match. it is different from finger printer. you have to go out and collect that. that is a unique identifier and a far more useful one. how good are the cameras that scan our iris from 40 foot away. i know.