Enlarge ImageMisidentified. An eye with iritis. Credit: Tariq Aslam/Moorfields Eye Hospital In the futuristic film Minority Report, an eye scanner gives actor Tom Cruise access to the secure police facility where he works. Even in today's world, eye scanners have begun cropping up in airports and at border patrols. Although the technology is billed as much more accurate than fingerprinting, scientists have worried about a potential flaw: If you have an eye infection--or an eye disease--will these scanners still recognize you as you? Scanners take a picture of the entire eye and then filter out everything but the iris,...