Biographical sketches of authors

Roy Want Intel Corporation, 2200 Mission College Boulevard, Santa Clara, California 95054 (electronic mail: roy.want@intel.com). Dr. Want is a principal engineer at Intel Research. His interests include ubiquitous computing, wireless protocols, hardware design, embedded systems, distributed systems, automatic identification, and micro-electromechanical systems (MEMS). He received his B.A. degree in computer science from Churchill College, Cambridge University, UK, in 1983 and continued research at Cambridge into reliable distributed multimedia systems. He earned a Ph.D. degree in 1988 and then went to Olivetti Research (1988–1991). While there, he developed the Active Badge, a system for automatically locating people in a building. Dr. Want joined the Ubiquitous Computing program at Xerox PARC in 1991 and led a project called PARCTab, one of the first context-aware computer systems. At PARC, he managed the Embedded Systems group and earned the position of principal scientist.

Trevor Pering Intel Corporation, 2200 Mission College Boulevard, Santa Clara, California 95054 (electronic mail: trevor.pering@intel.com). Dr. Pering is a research scientist at Intel Research. His research interests include many aspects of mobile and ubiquitous computing, including usage models, power management, novel form factors, and software infrastructure. He received his Ph.D. in electrical engineering from the University of California, Berkeley, with a focus on operating system power management techniques. Outside of engineering, he enjoys music (he plays jazz trombone), backpacking, and travel. He is a member of the ACM.

David Tennenhouse Intel Corporation, 2200 Mission College Boulevard, Santa Clara, California 95054 (electronic mail: david.tennenhouse@intel.com). Dr. Tennenhouse is an Intel Vice President and Director of Research. He has been one of the pioneers of asynchronous transfer mode (ATM) networking, active networks, software radio, and desktop media processing. He previously served as Chief Scientist and Director of the Information Technology Office of the Defense Advanced Research Projects Agency (DARPA), where he formulated the PRO-Active Computing research strategy of DARPA, which emphasizes the networking of embedded and autonomous systems. Dr. Tennenhouse received his B.A.Sc. and M.A.Sc. degrees from the University of Toronto. In 1989, he completed his Ph.D. at the Computer Laboratory of the University of Cambridge, UK. He then joined the Massachusetts Institute of Technology, where he held appointments in the Department of Electrical Engineering and Computer Science and in the Sloan School of Management. He is a founder of a consulting firm with expertise in fault tolerant transaction processing and has been a consultant to a number of organizations. Dr. Tennenhouse is a member of the ACM and IEEE and served on the Visiting Committee on Advanced Technology of the National Institute of Standards and Technology. He has been a member of the Subcommittee on Computing Information and Communications R&D of the National Science and Technology Council and chaired the Technology and Policy Working Group of the President's Information Infrastructure Task Force.