Don ’ t Sweat Your Privacy Using Humidity to Detect Human Presence

Sensor nodes are increasingly deployed in many environments. Most of these nodes feature onboard sensor chips to measure environmental data such as humidity, temperature and light. In this paper, we show that seemingly innocuous and non-sensitive data such as humidity measurements can disclose private information such as human presence. We conduct several experiments using Telos motes running TinyOS to justify our claims. research to investigate mechanisms to prevent the leakage of private information.