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A User Satisfaction Based Touch Button Design  

Kim, Jin (Corporate Design Department, LG Electronics Design Center)
Choi, Kwang-Soo (Corporate Design Department, LG Electronics Design Center)
Publication Information
IE interfaces / v.20, no.4, 2007 , pp. 539-546 More about this Journal
Abstract
This study has been conducted on touch screen interface design for mobile devices. It was intended to measure user’s satisfaction on one-handed thumb input mobile devices. Recent studies proposed the optimal touch button size, but it is inappropriate for mobile devices. Therefore, this study was focused on four touch key factors-width, height, the horizontal and vertical distance between touch keys-as independent variables. The ANOVA results showed that the user satisfaction of four touch key factors was significantly affected by the thumb input. It also apparent that the interactions between four factors were significant. As a result, the horizontal and vertical distance as well as the width and height affected the satisfaction of users. In addition, this study suggested satisfaction models which represent the top 30%, 50%, 70% of user satisfaction measurement. The results of this study could be used to design touch keys that are able to enhance the usability on touch screen based mobile devices.
Keywords
interface design; user satisfaction; touch screen;
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