Communication between connected objects often requires secure and reliable authentication mechanisms. These mechanisms are essential for verifying the identities of objects and preventing unauthorized access. The IoT offers several advantages and opportunities that are not necessarily found in other domains. For instance, IoT sensors collect real-time data about their environment and other objects which contain valuable information that, if used, can reinforce authentication. In this paper, we propose a novel idea for building opportunistic sensor-based authentication factors between IoT objects by leveraging the sensors already present in the systems where they interact. We claim that sensors can be utilized to build factors that reinforce object-to-object authentication mechanisms. Through the integration of these opportunistic sensor-based authentication factors into multi-factor authentication mechanisms, authentication in IoT can achieve a higher level of security. We provide illustrative experiments on two types of vehicles : mobile robots and cars.

翻译：联网对象之间的通信通常需要安全可靠的认证机制。这些机制对于验证对象身份、防止未经授权的访问至关重要。物联网提供了其他领域未必具备的多项优势与机遇。例如，物联网传感器实时收集其环境及其他对象的数据，这些数据蕴含宝贵信息，若加以利用，可增强认证安全性。本文提出一种创新思路，通过利用物联网对象交互系统中已有的传感器，构建机会性传感器认证因子。我们主张，传感器可用于构建增强对象间认证机制的因子。通过将这些机会性传感器认证因子集成到多因素认证机制中，物联网认证可实现更高安全水平。我们以移动机器人和汽车两类车辆为例进行了验证性实验。