Universal Design Interface Standards
http://tracecenter.org/world/irstds.html

University of Wisconsin

Abstract:

Essential to the ability of people to come up to universally designed products and know how to operate them is the existence of interface standards. Work is currently under way in a number of areas to ensure that people: 1. Know what to do to operate products they encounter; 2. Are able to connect any assistive technologies they may have with them to the products they encounter.