ABSTRACT
This chapter presents two studies: the first one discusses the design and the evaluation process of a tool for extending the possibility for disabled users to search and access the information on the Internet; the second discusses the development of a telemedicine tool for rehabilitation. Both the tools are created by a User Centered Design perspective (Norman, 1983) with a test-retest process:
• The first tool, called WhatsOnWeb, is a sonified clustering web search engine that makes use of visualization techniques to improve the effectiveness and efficiency of web searching. The whole information is presented to the user simultaneously in an interactive and sonified visual map, simplifying the user’s ability to access and find information. This technology is very important in a world in which more than two Exabytes of new information are created every year (Lyman and Varian, 2003).
