Towards accessible touch interfaces
Towards accessible touch interfaces
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迈向无障碍触摸界面
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
D. Gonçalves
中科院分区：
文献类型：
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作者：
Tiago Guerreiro;Hugo Nicolau;J. Jorge;D. Gonçalves
触摸屏移动设备为运动障碍人士带来了无尽的休闲、交流和工作机会。事实上，上肢残障的用户可以从一种对力量没有要求的设备中受益匪浅。然而，对于运动能力有限的人来说，在没有身体提示的情况下有效选择目标所需的精确度会带来问题。我们的目标是深入研究移动触摸屏界面，其特征和参数化，从而为运动障碍用户提供知情界面设计的工具。我们对15名四肢瘫痪的人进行了评估，使我们能够理解在一套综合的交互技术（点击、穿越、退出和方向手势）和参数化（位置、大小和方向）中限制用户性能的因素。我们的结果表明，对于每种技术，准确度和精密度在屏幕的不同区域和方向上有所不同，在某种程度上直接取决于目标尺寸。总的来说，敲击既是首选的技术，也是最有效的技术之一。这证明，只要保证正确的参数化或适应性，就可以为运动障碍用户和健全用户设计包容性的统一界面。
Touch screen mobile devices bear the promise of endless leisure, communication, and productivity opportunities to motor-impaired people. Indeed, users with residual capacities in their upper extremities could benefit immensely from a device with no demands regarding strength. However, the precision required to effectively select a target without physical cues creates problems to people with limited motor abilities. Our goal is to thoroughly study mobile touch screen interfaces, their characteristics and parameterizations, thus providing the tools for informed interface design for motor-impaired users. We present an evaluation performed with 15 tetraplegic people that allowed us to understand the factors limiting user performance within a comprehensive set of interaction techniques (Tapping, Crossing, Exiting and Directional Gesturing) and parameterizations (Position, Size and Direction). Our results show that for each technique, accuracy and precision vary across different areas of the screen and directions, in a way that is directly dependent on target size. Overall, Tapping was both the preferred technique and among the most effective. This proves that it is possible to design inclusive unified interfaces for motor-impaired and able-bodied users once the correct parameterization or adaptability is assured.