As wearable devices become increasingly miniaturized and powerful, a new opportunity arises for instant and dynamic device-to-device collaboration and human-to-device interaction. However, this progress presents a unique challenge: these minimalist wearables lack inherent mechanisms for real-time authentication, posing significant risks to data privacy and overall security. To address this, we introduce Proteus that realizes an innovative concept of time-bound contextual bio-IDs, which are generated from on-device sensor data and embedded into a common latent space. These bio-IDs act as a time-bound unique user identifier that can be used to identify the wearer in a certain context. Proteus enables dynamic and contextual device collaboration as well as robust human-to-device interaction. Our evaluations demonstrate the effectiveness of our method, particularly in the context of minimalist wearables.

翻译：随着可穿戴设备日益小型化和功能增强，即时动态的设备间协作与人机交互迎来了新机遇。然而，这一进展也带来了独特挑战：极简可穿戴设备缺乏实时认证的内在机制，对数据隐私与整体安全构成重大风险。为此，我们提出了Proteus系统，实现了时域情境化生物ID的创新概念——这些ID由设备端传感器数据生成，并嵌入公共隐空间。这些生物ID可作为时域唯一的用户标识，在特定情境中识别佩戴者。Proteus支持动态的情境化设备协作及稳健的人机交互。评估结果表明，该方法在极简可穿戴设备场景中具有显著有效性。