• the harshness of the environment, in which factors such as temperature, vibration, or radiation have significant impact on hardware reliability and stability and require special precautions;
• the environment's impact on the system's ability to function correctly, in particular with respect to sensor-data collection and communication;
• the need for safety-critical systems with high data reliability and accuracy; and
• the need for interaction concepts that provide full access to the required functionality without distracting the user from the physical world.
Paul Lukowicz is a professor of computer science at the University of Passau, Germany. His research interests include pervasive and ubiquitous computing, particularly activity and context recognition and wearable systems. Lukowicz has a PhD in computer science from the University of Karlsruhe, Germany. Contact him at firstname.lastname@example.org.
Mary G. Baker is a senior research scientist at HP Labs Palo Alto. Her research interests include distributed systems, networks, mobile systems, and digital preservation. Baker has a PhD in computer science from the University of California, Berkeley. She's a member of Usenix, the ACM, and IEEE. Contact her at email@example.com.
Joseph Paradiso is an associate professor of Media Arts and Sciences at MIT Media Lab, where he directs the Responsive Environments Group, which explores how sensor networks augment and mediate human experience, interaction, and perception. Paradiso has a PhD in physics from MIT's Lab for Nuclear Science. He's a senior member of IEEE and the American Institute of Aeronautics and Astronautics, and a member of the American Physical Society, the ACM, and Sigma Xi. Contact him at firstname.lastname@example.org.