Source:Livescience Iris scan may soon replace fingerprints. While iris-scanning technology has been around for more than 25 years, it's just now getting to where it's fast, easy and relatively bug-free. "It's a powerful biometric," said Patrick Grother, a computer scientist at the National Institute of Standards and Technology in Gaithersburg, Md., who has been developing algorithms and software for iris scanning. "It's fast to process, it has discriminative power -- my iris doesn't look like your iris, and it has reasonable permanence." Iris scanning cameras can be hand-held or attached to a wall. They are effective from three to six feet away from the subject's eyes.
