We have analyzed the temporal organization of gaze switches (to and away from the mobile screen) of mobile smartphone users in urban environments, and we discuss how such patterns of gaze switches can help us understand how users jointly manage mobile communication as well as other activities in everyday urban settings. More specifically, we report on the findings of an empirical study of smartphone use in transport situations, in which we have combined video recordings made with user-worn camera glasses with mobile screen capture data. First we show how being oriented toward multiactivity appears as a particular form of attunement to the potential sequential implicativeness of events occurring on screen or in the mobility environment. This provides the opportunity to treat them as possible occasions to switch the orientation of one’s gaze from one activity-relevant field of activity to another. Second we discuss how interfaces with a “rugged” sequential texture. We argue that such rugged interfaces offer frequent sequential opportunities that might be especially useful in multiactivity situations in public places, where balancing the demands of two or more activities may constitute a serious moral and/or safety concern.

我们分析了城市环境中移动智能手机用户注视开关（进出手机屏幕）的时间结构，并讨论了这种注视开关模式如何帮助我们了解用户如何共同管理移动通信以及其他活动在日常的城市环境中。更具体地说，我们报告了在运输情况下对智能手机使用进行实证研究的结果，在该研究中，我们将使用用户佩戴的相机眼镜拍摄的视频记录与移动屏幕捕获数据结合在一起。首先，我们展示了面向多功能性的方式是如何作为对屏幕或移动环境中发生的事件的潜在顺序影响的一种特殊形式的协调而出现的。这提供了机会，使他们尽可能地将注视的方向从一个与活动相关的活动领域切换到另一个活动领域。其次，我们讨论如何与“坚固”的顺序纹理进行交互。我们认为，这种坚固的接口提供了频繁的顺序机会，这在公共场所的多活动情况下尤其有用，因为在这种情况下，平衡两个或多个活动的需求可能会构成严重的道德和/或安全问题。