Remote communication technologies have become widely used; however, supporting a sense of shared physical space and conveying rich non-verbal cues remain challenging in many social interaction scenarios. This study presents "Yui," a full-body cybernetic android avatar designed to integrate operator-side immersive teleoperation with interlocutor-side human-like social signaling. Yui combines a 55-degrees of freedom full-body mechanism with a previously developed android head, facial expression and gaze control, upper-body and arm motion, hand actuation, and a mobile platform. It can be operated through either the immersive mode using a head mounted display-based interface or desktop mode using a webcam-based interface. We evaluated the system through three real-world deployments: a long-term public exhibition at Expo 2025 in Osaka, Kansai, Japan; a remote educational exchange between elementary school students; and a public interaction study with general participants. During the Expo deployment, two units accumulated approximately 1131 h of operation, demonstrating both operational feasibility and maintenance challenges. In the public study, both operators and interlocutors reported positive impressions of co-presence and willingness to use the system. Interlocutors also rated the avatar positively in terms of human likeness and the transmission of emotions and intentions. The results indicate usability for general operators while suggesting room for improvement in precise controllability. These findings provide field-derived evidence and design implications for socially deployable full-body android avatars.

翻译：远程通信技术已得到广泛应用，但在许多社交互动场景中，支撑共享物理空间的感知以及传达丰富的非语言线索仍是挑战。本研究提出了全身赛博格安卓化身"Yui"，该化身旨在将操作员侧的沉浸式远程操作与对话方侧的类人社交信号传递相整合。Yui结合了具有55自由度的全身机构与先前开发的安卓头部、面部表情与视线控制、上半身与手臂运动、手部驱动装置以及移动平台。操作可通过基于头戴显示器的沉浸式模式或基于网络摄像头的桌面模式进行。我们通过三次真实世界部署对系统进行了评估：日本关西大阪2025年世博会的长期公众展览、小学间的远程教育交流，以及面向普通参与者的公共互动研究。在世博会部署期间，两台设备累计运行约1131小时，既验证了操作可行性也揭示了维护挑战。在公共研究中，操作员与对话方均对共同在场感及使用意愿给予积极评价。对话方还对化身在类人程度、情感与意图传递方面给予正面评价。结果表明该系统对普通操作员具有可用性，同时提示在精确可控性方面存在改进空间。这些发现为可社交部署的全身安卓化身提供了基于实地证据的设计启示。