Two researchers from the Kyoto Institute of Technology have created electronic goggles that help blind people cross streets safely. The electronic eye detects the location of a crosswalk using a digital camera and computer, then calculates the width of the crossing and the color of assocaited traffic lights. The system worked 194 out of 196 times in tests. In those two failures, the system mistakenly said there wasn't a crosswalk where there was one. Better that than the other way around, we suppose.