An anonymous reader writes "Winthrop University in South Carolina is testing out iris scanning technology during freshman orientation this summer. Students had their eyes scanned as they received their ID cards in June. 'Iris scanning has a very high level of accuracy, and you don't have to touch anything, said James Hammond, head of Winthrop University's Information Technology department. 'It can be hands free security.'"
I wouldn't want to be locked out a building because of a scratched lens or a system outage, though.