We investigate the ethical and privacy implications of voice-first ambient interfaces (VFAIs) for aging in place through an in-depth engagement with five older adults. Our participants were in the process of becoming experienced VFAI users, and had used a VFAI-based design probe for health data reporting. We create and iteratively refine an interview protocol using Privacy Cards. We customize Privacy Cards by drawing on participants' previous interviews and device usage logs. Using Privacy Cards, we conduct interviews to surface their mental models, and explore their privacy concerns. We find insufficient mental models for proper consent. For example, participants did not know who could access their data, and experienced difficulty distinguishing built-in functionality from third-party apps. Participants initially expressed little worry about VFAI-related ethical concerns, but interviews with Privacy Cards revealed nuanced issues, resulting in various implications for future research and design.

翻译：本研究通过与五位老年人的深度互动，探讨了语音优先环境界面在居家养老场景中的伦理与隐私影响。参与者均为正在成为熟练VFAI用户的人群，并曾使用基于VFAI的健康数据报告设计探针。我们创建并迭代优化了一套采用隐私卡片的访谈方案，通过结合参与者前期访谈记录与设备使用日志对隐私卡片进行个性化定制。借助隐私卡片开展的访谈揭示了参与者的心智模型，并深入探究了其隐私关切。研究发现，参与者对有效同意机制的心智模型存在不足，例如不了解数据访问权限归属，且难以区分系统内置功能与第三方应用。尽管参与者最初对VFAI相关伦理问题表现出较低担忧，但隐私卡片访谈揭示了多层次隐忧，为未来研究与设计提出了多维度启示。