近年來，虛擬實境技術越發成熟，如何在虛擬實境中進行有效率的文字
輸入卻依然未被解決，使用實體鍵盤雖然可以有效率的輸入文字，卻有著活
動空間被限制的缺點，使用智慧型手機雖可改善活動空間被限制的缺點，在
虛擬實境中使用卻效率不彰。因此在本研究中，我們期望得知在虛擬實境
中使用智慧型手機進行文字輸入時的效率問題能不能藉著視覺回饋進行改
善，且設計出一種新的輸入方式Slider，並列出虛擬實境中手指點擊位置可
視化、手指位置可視化、攝影機透視以及Slider 等四項變因進行分析，為了
達到實驗目的，我們邀請58 位實驗受測者，並根據受測者們在不同變因下
進行文字輸入時的輸入速度以及錯誤率，加上實驗後對於各方面的滿意度調
查，得出以下結論，不論是顯示手指點擊位置、顯示手指位置或是攝影機透
視，都可以有效的改善在虛擬實境中使用智慧型手機打字的效率，而Slider
相比以上的視覺回饋變因不但可以更有效的增進文字輸入的效率更在使用者
體驗上比攝影機透視還要更好。

In recent years, the technology of virtual reality is getting mature; However,
text entry in Virtual Reality is still a serious problem. Using physical
keyboards can help people type efficiently; However, people are confined to
space in front of physical keyboards. Although using mobile can improve the
disadvantage of the physical keyboard, mobile text entry is still inefficient.
In our work, we expect to understand can the efficiency be improved by offering
visual feedback, and also design a new typing interface called Slider.
We analyze four variances include touch point visible, finger position visible,
see-through design and Slider to achieve our goal. To analyze the effect by
variances cause, we invited 58 users and collect the speed and error rate when
they typed in different variance condition. The data and the questionaire
result, which we asked the user to answer help us to conclude the following
conclusion. All of variances that we discuss can improve our typing efficiency.
Slider is more efficient not only to improve the typing efficiency but
also to experience Virtual Reality.

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