From the lab to people's home: lessons from accessing blind participants' interactions via smart glasses in remote studies

From the lab to people's home: lessons from accessing blind participants' interactions via smart glasses in remote studies
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从实验室到人们的家:远程研究中通过智能眼镜了解盲人参与者互动的经验教训

DOI:
10.1145/3493612.3520448
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发表时间:
2022
期刊:
19th Web for All Conference (W4A’22
影响因子:
--
通讯作者:
Kacorri, Hernisa
Kacorri, Hernisa
中科院分区:
--
文献类型:
--
作者:
Lee, Kyungjun;Hong, Jonggi;Jarjue, Ebrima;Mensah, Ernest Essuah;Kacorri, Hernisa

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研究人员采用了在线调查和视频会议等远程方法来克服现场可用性测试中的挑战,例如参与度、用户代表性和安全性。然而,硬件测试台上的远程用户评估是有限的,特别是对于盲人参与者,因为此类方法限制了对用户交互的观察。我们使用智能眼镜对盲人进行可用性测试,并分享在盲人参与者家中进行的案例研究(N=12)的经验教训,其中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。我们表明,智能眼镜具有远程观察参与者与智能手机测试台交互的潜力;平均 58.7% 的互动是通过第一人称视角完整捕捉到的,而通过第三人称视角捕捉到的互动比例为 3.7%。然而,这种增益在参与者之间并不均匀,因为它很容易受到将耳朵朝向声源的头部运动的影响,这凸显了对更具包容性的相机外形尺寸的需求。我们还分享了在处理智能眼镜缺乏屏​​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等问题时所吸取的经验教训。
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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