Requirements for reputation in decentralized smart sensor networks

In the recent years, sensors have improved to the point where they process data autonomously, instead of delivering raw information, e.g., a smart camera may send events such as a person falling instead of the video stream. Modern sensors also offer standardized interfaces and their output can be combined to execute a specific task. For saving costs, monitoring bigger areas or enhancing the quality of each task, a number of sensors may be shared between multiple parties. The key challenge to the distributed use of smart sensors is assessing trust. When a sensor is used, especially after a long break or for the first time, it is essential to know whether it can be trusted, i.e., it must be determined, if the information is authentic and has the quality sufficient for the specific purpose. This report discusses the requirements to the reputation of sensors and presents the resulting model for building trust