Abstract
The cellular phone market has advanced rapidly and consequently has produced a variety of functional capabilities and interface designs. However, this same rapid proliferation has led to problems with the diffusion and organization of design guidelines. Given the current market demands on usability that include addressing the needs of users with disabilities, cellular phone developers need easy-to-access and comprehensible design guidelines. This study was conducted to develop a guidelines tool to support the development of usable cellular phone interfaces. The tool was developed on the basis of knowledge elicitation techniques of experts, including card sorting and category evaluation. Cluster and content analyses were used to analyze the quantitative and qualitative data. Categories of guidelines and their meanings are provided.
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