Every August in a town in Ohio aptly named "Twinsburg" -- almost 2,000 sets of twins attend "The Twins Day Festival" -- which is generally regarded as the largest official gathering of twins in the world. And it's an event that researchers from the University of Notre Dame's Department of Computer Science and Engineering attend -- to do some field work! Notre Dame's Kevin Bowyer and Patrick Flynn spent the weekend in Twinsburg convincing sets of twins to sit at the center of a half-circle arc surrounded by five cameras which took high resolution color photographs from different angles. These volunteers also posed for iris and 3-D face imaging cameras. Flynn and Bowyer have been developing and assessing image-based biometrics and multi-biometrics technologies since 2001, including first-of-kind comparisons of face photographs, face thermograms, 3-D face images, iris images, video of human gait, and even ear and hand shapes. A biometric is a stable and distinctive physiological feature of a person that can be measured and used to identify that person; the fingerprint is the most familiar example. In the wake of the terrorist attacks of Sept. 11, 2001, federal agencies have become increasingly interested in the feasibility of facial and iris recognition technologies. Here's a link to Notre Dame's official release:LINK: BIOMETRIC SAMPLING
