With the growth of wearable devices, which are usually constrained in computational power and user interface, this pairing has to be autonomous. Considering devices that do not have prior information about each other, a secure communication should be established by generating a shared secret key derived from a common context between the devices. Context-based pairing solutions increase the usability of wearable device pairing by eliminating any human involvement in the pairing process. This is possible by utilizing onboard sensors (with the same sensing modalities) to capture a common physical context (e.g., body motion, gait, heartbeat, respiration, and EMG signal). A wide range of approaches has been proposed to address autonomous pairing in wearable devices. This paper surveys context-based pairing in wearable devices by focusing on the signals and sensors exploited. We review the steps needed for generating a common key and provide a survey of existing techniques utilized in each step.

中文翻译：

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基于生物特征信号的可穿戴设备配对调查

随着可穿戴设备的增长，这些设备通常受到计算能力和用户界面的限制，这种配对必须是自主的。考虑到设备之间没有关于彼此的先验信息，应该通过生成从设备之间的公共上下文导出的共享密钥来建立安全通信。基于上下文的配对解决方案通过消除配对过程中的任何人工参与来提高可穿戴设备配对的可用性。这可以通过利用板载传感器（具有相同的传感模式）来捕获共同的物理环境（例如，身体运动、步态、心跳、呼吸和 EMG 信号）来实现。已经提出了多种方法来解决可穿戴设备中的自主配对问题。本文通过关注所利用的信号和传感器来调查可穿戴设备中基于上下文的配对。我们回顾了生成通用密钥所需的步骤，并对每个步骤中使用的现有技术进行了调查。