An implementation of privacy preserving stream integration system

In this paper, we introduce a privacy preserving stream integration system. Nowadays, since wireless networks are available anywhere and costs of sensors have been decreased, many digital gadgets have sensors and we can collect sensor data easily. At the same time, many web based tools have been launched and we can easily make applications using such sensor data, i.e. data streams. In such Web of Things (WoT), we also should consider those sensor data do not violate people's privacy. However, privacy preservation requires some knowledge about statistics and cryptography, and thus it is not easy for developers to construct privacy-preservation mechanisms. Our proposal system works with one of the famous WoT tools, Node-RED, and gives application developers privacy preserving functions, so that they need less consideration about privacy and can focus making their applications.