Optical Security?

"Iris scanners have quickly moved from the realm of science fiction into everyday public use by governments and private businesses. Iris recognition is rarely impeded by contact lenses or eyeglasses, and can work with blind individuals as well," goes the Huffington Post post. "The scanners, which have been used by some American police departments, can scan up to 50 people a minute without requiring the individuals to stop and stand in front of the scanners." Read more on the Huffington Post.