隨著行動電話科技不斷地發展，它已不再只是連絡用的工具，也已可以在上面閱讀電子書來幫助學習。然而目前大多數的手機都是以視覺導向的介面設計，使得視障者無法順利使用。DAISY是一個無障礙設計的資訊系統，它提供了視障人士更方便獲取資訊的方法，如能應用在手機上將有助於DAISY的推廣。為了能設計出在未來能讓視障者容易使用的DAISY手機介面，本研究中針對現有手機介面做了改善，以降低使用者使用的困難。
本研究根據通用設計原則，設計DAISY與手機功能結合時之無障礙操作介面，改良過的介面將功能表根據視障者意見重新配置，以及加入更彈性的詢問選項。並利用GOMS分析以及實驗，來評估符合無障礙設計的DAISY手機操作介面。實驗中提供了改良過以及原有的介面，並找來十二位視障受試者進行實驗任務，並比較兩者的操作時間、步驟、錯誤次數以及心智負荷程度
研究結果顯示，改良過的介面能減少38%的操作時間，操作步數減少3步，失誤率也明顯降低，證實改善是有用的。本研究的改善建議可以用在未來的DAISY手機上，並再做更進一步的評估與改善，使得視障者能更便利地在手機上閱讀。

With the development of mobile phone technology, mobile phone is no longer only used to communicate, people can read e-books to learn more on it. Majority of mobile phones are visual-oriented designed, that make the visually impaired unable to use all the functions smoothly. DAISY is an accessible information system, which provides disabled people a convenient way to get information. It would be contributive to promote DAISY if it could be used on mobile phone. In order to design a DAISY mobile phone interface could be used easily for visually impaired user, improvement on current mobile phone interface was developed in this study, that could decrease the difficulty for use.
A combined operation interface of DAISY and mobile phone function is developed basing on universal design rule in this study. The improved interface reset the menu according to visually impaired user’s needs, and adds a much more flexible selecting option. The user interface design is evaluated by analysis of GOMS and experiment. The experiment provided the original and improved interfaces let 12 subjects who were recruited do the experimental task. The operating time, steps error and mental workload of subjects’ operated on the two interfaces were compared..
The results of this study indicated the operation on the improved interface could reduce 38% operating time, 3 operating steps, and the error rate was significantly decreased. The results proved that the improvement was effective. It is expected that the improvement of this interface could be used on the future DAISY mobile phone which could let visually impaired users read accessibly on mobile phone.

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