The 6th ACM Conference on Embedded Networked Sensor Systems (SenSys) is a highly selective, single-track forum for the presentation of research results on systems issues in the area of embedded, networked sensors. Distributed systems based on networked sensors and actuators with embedded computation capabilities allow for an instrumentation of the physical world at an unprecedented scale and density, thus enabling a new generation of monitoring and control applications. This conference provides an ideal venue to address the research challenges facing the design, deployment, use, and fundamental limits of these systems. Sensor networks require contributions from many fields, from wireless communication and networking, embedded systems and hardware, distributed systems, data management, and applications, so we welcome cross-disciplinary work.