Raynal Mathieu, Roussille Philippe
University of Toulouse - IRIT Toulouse, France.
Stud Health Technol Inform. 2017;242:902-909.
Touch screens rapidly and significantly replace physical keyboards on mobile devices. Hence, text entry is now dependent on soft keyboards that are widely used by sighted people, but raise accessibility issues for visually impaired users. These users rely on tactile exploration with vocal feedback of the whole screen for entering text, which is time consuming. A software keyboard that aims reducing tactile exploration and speeding up text entry for VI users was designed. It relies on the selection of the first letter of a word and rapid and inaccurate typing of the remaining letters. It then proposes a list of words having the same first letter and a similar total distance between letters. The evaluation with twelve VI users showed that this keyboard is very efficient for words larger than five characters. It also helps preventing certain typing errors.
触摸屏迅速且显著地取代了移动设备上的物理键盘。因此，文本输入现在依赖于视力正常的人广泛使用的软键盘，但这给视障用户带来了无障碍问题。这些用户依靠通过全屏幕语音反馈进行触觉探索来输入文本，这很耗时。设计了一种旨在减少触觉探索并加快视障用户文本输入速度的软件键盘。它依赖于选择单词的首字母并对其余字母进行快速且不准确的输入。然后它会提出一份具有相同首字母且字母之间总距离相似的单词列表。对12名视障用户的评估表明，这种键盘对于长度超过五个字符的单词非常高效。它还有助于防止某些打字错误。
