Nowadays, cars offer many possibilities to explore the world around you by providing location-based information displayed on a 2D-Map. However, this information is often only available to front-seat passengers while being restricted to in-car displays. To propose a more natural way of interacting with the environment, we implemented an augmented reality head-mounted display to overlay points of interest onto the real world. We aim to compare multiple selection techniques for digital objects located outside a moving car by investigating head gaze with dwell time, head gaze with hardware button, eye gaze with hardware button, and hand pointing with gesture confirmation. Our study was conducted in a moving car under real-world conditions (N=22), with significant results indicating that hand pointing usage led to slower and less precise content selection while eye gaze was preferred by participants and performed on par with the other techniques.

翻译：如今，汽车通过车载二维地图显示位置相关信息，为探索周边环境提供了多种可能。然而，这类信息通常仅限前排乘客在车内显示屏上获取。为提供更自然的交互方式，我们采用增强现实头戴式显示器将兴趣点叠加至现实世界。本研究旨在比较移动车辆外部数字对象的多种选择技术，包括：凝视停留时间、凝视配合硬件按钮、眼动追踪配合硬件按钮以及手势确认式手部指向。我们在真实移动车辆环境中开展实验（N=22），结果显示：手部指向操作导致内容选择速度更慢且精度更低，而眼动追踪技术受到参与者青睐，其表现与其他技术相当。