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

Sensor nodes are increasingly deployed in many environments. Most of these nodes feature on- board 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 sev- eral experiments using Telos motes running TinyOS to justify our claims. research to investigate mechanisms to prevent the leakage of private information.