多點觸控手持式行動裝置之互動介面使用性評估研究

The Usability Evaluation of Multi-touch Hand-held Mobile Device Interface

10.29768/JNTUT.201106.0007

陳圳卿(Chun-Ching Chen)；陳嘉妮(Chia-Ni Chen)

多點觸控 ； 人機互動 ； 介面設計 ； 使用性 ； Multi-touch ； Human-Computer Interaction ； Interface Design ； Usability

臺北科技大學學報

44卷1期（2011 / 06 / 01）

89 - 118

繁體中文

近年來，隨著觸控面板的研發與多點觸控式產品的帶動，具有高互動性的手持式行動裝置逐漸在市場上普及。新的互動式產品的使用者經驗模式正在改變，也產生了新的商業模式；軟體業者提供多樣的應用程式，藉由使用者的手中感受這些新型態的手持式行動裝置所帶來的便利。然而，隨之而來的是，這些互動操作上迥異於傳統介面的人機系統，也跟著衍生出更多或不同的使用性問題。因此，本研究的目的即以目前最為普遍的iPhone手機平台上一般使用者常用的記事本(Note)軟體為代表，透過使用者的操作量測其實驗績效（操作時間與錯誤次數）以及主觀評量（使用性量表與質性使用性意見）以檢視其使用性。研究結果以雙因子變異數分析了解兩種記事本應用軟體介面及實驗任務與操作時間、錯誤次數以及主觀使用性評量個別變項間的顯著性關係。本研究的結果顯示出具有多點觸控操作的介面設計確實與傳統介面在使用性設計上有些差異。研究的結論提出此類新型態的使用性原則如下：1.背景與圖像的對比必須清楚分辨；2.畫面編排與互動操作手勢的直覺產生關聯；3.操作應符合使用者原先的經驗；4.避免畫面元件的干涉；5.圖像意象要符合其涵意。未來研究建議可深入探討手勢操作的方式在使用性原則上的影響。

In recent years, with the development of touch screen technology and multi-touch products, portable devices with high interaction are popular in the market. This situation changes users' behavior and experience in using new interactive product, and brings brand new business model in e-commerce. Software industry starts to develop various on-line applications to provide users convenience in life, through these state-of-the-art products. However, these new human-computer systems, equipped with totally different interface with conventional systems, could raise more or various usability problems. Therefore, this study aims to investigate usability issue through users' evaluation on operative performance (task completion time and errors) and subjective ratings (usability inventory and qualitative feedback) when using ”Note” application on iPhone. The results are analyzed using two-way ANOVA to examine the significance between applications and tasks and task completion time, errors and subjective ratings. The results show that interface design with multi-touch would require different usability from conventional interface. It is concluded that the following usability principles could be applied to new devices. (i) The design of background and icons should be clearly distinguished; (ii) layout design should meet the intuition and meaning of hand gesture; (iii) the interaction mode should consider users' previous experience; (iv) avoid the interference between different interface elements; (v) the meaning of icon should consider the consistence of cognition. Future work can be focused on the in-depth investigation of usability design of hand gesture of multi-touch.

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