Kee-Yip Chan

Shen, H., Chan, K. -Y., Coughlan, J., & Brabyn, J. (2008). A mobile phone system to find crosswalks for visually impaired pedestrians. Technology And Disability, 20, 217–224.
Chan, K. -Y., Manduchi, R., & Coughlan, J. (2007). Accessible spaces: navigating through a marked environment with a camera phone. Proceedings of the 9th international ACM SIGACCESS conference on Computers and accessibility, 229–230. ACM.