智慧型手機已成為現今之主流使用趨勢，文字訊息(SMS)的使用量於近年更有大幅的成長。而現今手機的輸入方式仍有著許多不便、長久使用甚至可能導致累積性傷害。於是本研究鑑於現今手機文字輸入之缺點，以QWERTY鍵盤編排方式為基底，透過側邊實體按鍵與觸控介面之交互操作發展出擇區增域與指憶和弦等兩種新式輸入方法，以求改善現有缺點並達到增進輸入績效之目的。
研究實驗階段主要可分為使用性觀察與量測、前測實驗、新式輸入法設計、新式輸入法績效實驗等步驟。透過觀察與量測、加上前測實驗的結果進行新式輸入方法之設計與規劃，最後進行新式輸入法輸入績效測驗與主觀意見評量。實驗結果發現兩種新式輸入法皆有著良好的輸入學習績效，擇區增域輸入法有著較低的錯誤率，而指憶和弦輸入法速率更於短時間內超越了現有輸入方式。並期許本研究結果能做為日後新式手機輸入方法之前瞻考量。

Smart phones have become today’s mainstream usage of mobile phone, text messages (SMS) using circulation has substantially grown in recent years. And now the mobile phone typing still has some inconvenience, long-term using may even lead to cumulative damage. In order to improve the existing shortcomings and achieve the purpose of enhancing the input performance, this research develops two new input methods through the side physical buttons with the touch screen according to QWERTY keyboard layout.
This study can be divided into usability observation and measurement, pre-test experiments, new text entry method design, and performance test of new text entry methods. Researchers design new type of text entry method through observation, measurement and the results of the pre-test experiments. At last, they do performance tests and subjective assessments of new text entry methods. The experimental results show the two new input methods have a good learning performance, space corresponding type method has a lower error rate, action corresponding type method is even faster than current input method in short period. Expecting that the research could be the forward-looking considerations of new style mobile phone input method.

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