Designing Motion Gesture Interfaces in Mobile Phones for Blind People
Designing Motion Gesture Interfaces in Mobile Phones for Blind People
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DOI：
10.1007/s11390-014-1470-5
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发表时间：
2014-09-01
影响因子：
1.9
通讯作者：
Ren, Xiangshi
中科院分区：
文献类型：
--
作者：
Dim, Nem Khan;Ren, Xiangshi
尽管智能手机具有先进的功能，但大多数盲人仍在使用布局熟悉且依赖触觉按钮的老式手机。智能手机支持辅助功能，包括振动、语音和声音反馈以及屏幕阅读器。然而，这些功能仅旨在为用户命令或输入提供反馈。对于盲人来说，发现屏幕上的功能并输入命令仍然是一个挑战。尽管智能手机支持语音命令，但系统在嘈杂的环境中很难识别这些命令。与此同时，智能手机集成了复杂的运动传感器，并且设备倾斜的运动手势因免眼输入而受到关注。我们相信，这些动作手势交互可以让盲人更有效地访问智能手机功能。然而，大多数盲人都不是智能手机用户，他们既不了解智能手机的功能可供性，也不了解通过动作手势进行交互的潜力。为了调查盲人最常用的手势，我们对 13 名盲人参与者进行了一项用户定义的研究。使用来自用户研究的手势集和设计启发法，我们实现了基于运动手势的界面，具有语音和振动反馈，用于浏览电话簿和拨打电话。然后，我们进行了第二项研究，以调查运动手势界面的可用性以及使用该系统的用户体验。研究结果表明，运动手势界面比传统按钮界面更有效。通过研究结果，我们为设计智能手机界面提供了启示。
Despite the existence of advanced functions in smartphones, most blind people are still using old-fashioned phones with familiar layouts and dependence on tactile buttons. Smartphones support accessibility features including vibration, speech and sound feedback, and screen readers. However, these features are only intended to provide feedback to user commands or input. It is still a challenge for blind people to discover functions on the screen and to input the commands. Although voice commands are supported in smartphones, these commands are difficult for a system to recognize in noisy environments. At the same time, smartphones are integrated with sophisticated motion sensors, and motion gestures with device tilt have been gaining attention for eyes-free input. We believe that these motion gesture interactions offer more efficient access to smartphone functions for blind people. However, most blind people are not smartphone users and they are aware of neither the affordances available in smartphones nor the potential for interaction through motion gestures. To investigate the most usable gestures for blind people, we conducted a user-defined study with 13 blind participants. Using the gesture set and design heuristics from the user study, we implemented motion gesture based interfaces with speech and vibration feedback for browsing phone books and making a call. We then conducted a second study to investigate the usability of the motion gesture interface and user experiences using the system. The findings indicated that motion gesture interfaces are more efficient than traditional button interfaces. Through the study results, we provided implications for designing smartphone interfaces.