Vivian Healy Richard Herder A Walk-Up-and-Use Information System for the Sydney Olympics: A Case Study in User-Centered Design. 335-347 2002 14 Int. J. Hum. Comput. Interaction 3-4 http://dx.doi.org/10.1207/S15327590IJHC143&4_04 db/journals/ijhci/ijhci14.html#HealyH02