Tapping buttons and hyperlinks on smartphones is a fundamental operation, but users sometimes fail to tap user-interface (UI) elements. Such mistakes degrade usability, and thus it is important for designers to configure UI elements so that users can accurately select them. To support designers in setting a UI element with an intended tap success rate, we developed a plugin for Figma, which is modern software for developing webpages and applications for smartphones, based on our previously launched web-based application, Tappy. This plugin converts the size of a UI element from pixels to mm and then computes the tap success rates based on the Dual Gaussian Distribution Model. We have made this plugin freely available to external users, so readers can install the Tappy plugin for Figma by visiting its installation page (https://www.figma.com/community/plugin/1425006564066437139/tappy) or from their desktop Figma software.

翻译：在智能手机上点击按钮和超链接是一项基本操作，但用户有时无法成功点击用户界面（UI）元素。此类错误会降低可用性，因此设计师配置UI元素以确保用户能够准确选择至关重要。为支持设计师以预期点击成功率设置UI元素，我们基于先前发布的基于Web的应用程序Tappy，为现代智能手机网页和应用开发软件Figma开发了一款插件。该插件将UI元素的尺寸从像素转换为毫米，然后基于双高斯分布模型计算点击成功率。我们已将此插件免费提供给外部用户，读者可通过访问其安装页面（https://www.figma.com/community/plugin/1425006564066437139/tappy）或从其桌面Figma软件安装Tappy插件。