Recent commercial off-the-shelf virtual and augmented reality devices have been promoted as tools for knowledge work and research findings show how this kind of work can benefit from the affordances of extended reality (XR). One major advantage that XR can provide is the enlarged display space that can be used to display virtual screens which is a feature already readily available in many commercial devices. This could be especially helpful in mobile contexts, in which users might not have access to their optimal physical work setup. Such situations often occur in a public setting, for example when working on a train while traveling to a business meeting. At the same time, the use of XR devices is still uncommon in public, which might impact both users and bystanders. Hence, there is a need to better understand the implications of using XR devices for work in public both on the user itself, as well as on bystanders. We report the results of a study in a university cafeteria in which participants used three different systems. In one setup they only used a laptop with a single screen, in a second setup, they combined the laptop with an optical see-through AR headset, and in the third, they combined the laptop with an immersive VR headset. In addition, we also collected 231 responses from bystanders through a questionnaire. The combined results indicate that (1) users feel safer if they can see their physical surroundings; (2) current use of XR in public makes users stand out; and (3) prior XR experience can influence how users feel when using XR in public.

翻译：最近商用虚拟现实和增强现实设备已被推广为知识工作的工具，研究结果表明此类工作可从扩展现实（XR）的赋能中获益。XR提供的主要优势之一是扩展显示空间，可用于显示虚拟屏幕，这一功能已在许多商用设备中实现。这对于移动工作场景尤为有益，因为用户可能无法使用最优的物理工作配置。此类场景常发生在公共环境中，例如乘火车前往商务会议途中办公。然而，XR设备在公共场合的使用仍不普遍，这可能对用户和旁观者均产生影响。因此，有必要深入理解公共场合使用XR设备对用户自身及旁观者的影响。本文报告了一项在大学食堂开展的研究结果，参与者使用了三种不同系统：第一种仅使用单屏笔记本电脑，第二种将笔记本电脑与光学透视AR头显结合，第三种则将笔记本电脑与沉浸式VR头显结合。此外，我们通过问卷收集了231份旁观者反馈。综合结果表明：（1）用户能观察物理环境时会感到更安全；（2）当前在公共场合使用XR设备会让用户显得突兀；（3）过往XR使用经历会影响用户在公共场合使用XR时的主观感受。