从实验室到人们的家：远程研究中通过智能眼镜进行盲人参与者互动的经验教训
From the Lab to People's Home: Lessons from Accessing Blind Participants' Interactions via Smart Glasses in Remote Studies
摘要：
研究人员已经采用了远程方法，如在线调查和视频会议，以克服在进行面对面的可用性测试，如参与，用户代表性和安全性的挑战。然而，硬件测试平台上的远程用户评估是有限的，特别是对于盲人参与者，因为这种方法限制了对用户交互的观察。我们在盲人的可用性测试中使用智能眼镜，并分享我们在盲人参与者家中（N=12）进行的案例研究中的经验教训，实验者可以通过双视频会议访问参与者的活动：通过笔记本电脑摄像头的第三人称视图和通过参与者佩戴的智能眼镜的第一人称视图。我们发现，智能眼镜具有远程观察参与者与智能手机测试台互动的潜力;平均58.7%的互动是通过第一人称视角完全捕获的，而通过第三人称视角捕获的只有3.7%。然而，这种增益在参与者之间并不均匀，因为它容易受到头部运动的影响，使耳朵朝向声源，这突出了对更具包容性的相机形状因子的需求。我们还分享了我们在处理智能眼镜中缺乏屏幕阅读器支持、电池快速耗尽以及盲人参与者远程研究中的互联网连接方面的经验教训。
英文摘要：
Researchers have adopted remote methods, such as online surveys and video conferencing, to overcome challenges in conducting in-person usability testing, such as participation, user representation, and safety. However, remote user evaluation on hardware testbeds is limited, especially for blind participants, as such methods restrict access to observations of user interactions. We employ smart glasses in usability testing with blind people and share our lessons from a case study conducted in blind participants' homes (N=12), where the experimenter can access participants' activities via dual video conferencing: a third-person view via a laptop camera and a first-person view via smart glasses worn by the participant. We show that smart glasses hold potential for observing participants' interactions with smartphone testbeds remotely; on average 58.7% of the interactions were fully captured via the first-person view compared to 3.7% via the third-person. However, this gain is not uniform across participants as it is susceptible to head movements orienting the ear towards a sound source, which highlights the need for a more inclusive camera form factor. We also share our lessons learned when it comes to dealing with lack of screen reader support in smart glasses, a rapidly draining battery, and Internet connectivity in remote studies with blind participants.
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