While advances in mobile text entry enable smartphone users to type almost as fast as on hardware keyboards, text-heavy activities are still not widely adopted. One reason is the lack of shortcut mechanisms. In this article, we determine shortcuts for text-heavy activities, elicit shortcut gestures, implement them for a fully touch-sensitive smartphone, and conduct an evaluation with potential users. We found that experts perform around 800 keyboard shortcuts per day, which are not available on smartphones. Interviews revealed the lack of shortcuts as a major limitation that prevents mobile text editing. Therefore, we elicited gestures for the 22 most important shortcuts for smartphones that are touch-sensitive on the whole device surface. We implemented the gestures for a fully touch-sensitive smartphone using deep learning and evaluated them in realistic scenarios to gather feedback. We show that the developed prototype is perceived as intuitive and faster than recent commercial approaches.

中文翻译：

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用于在全触控智能手机上进行移动文本编辑的快捷手势

虽然移动文本输入技术的进步使智能手机用户的打字速度几乎与硬件键盘一样快，但文本密集型活动仍未被广泛采用。原因之一是缺乏捷径机制。在本文中，我们确定了文本密集活动的快捷方式，引出快捷手势，将它们用于完全触摸感应的智能手机，并与潜在用户进行评估。我们发现专家每天执行大约 800 个键盘快捷键，而这些快捷键在智能手机上是不可用的。采访显示，缺乏快捷方式是阻碍移动文本编辑的主要限制。因此，我们为智能手机的 22 个最重要的快捷方式引出了手势，这些快捷方式在整个设备表面都是触敏的。我们使用深度学习为全触敏智能手机实现了手势，并在现实场景中对其进行评估以收集反馈。我们表明，开发的原型被认为比最近的商业方法更直观且更快。