James L. Levine  IBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, NY 10598 (levine2@us.ibm.com). Dr. Levine is a research staff member in the Physical Sciences Department at the Thomas J. Watson Research Center. He received a B.S. degree in physics at the Massachusetts Institute of Technology in 1958 and M.S. and Ph.D. degrees in physics at the University of Minnesota in 1960 and 1962, respectively. He joined IBM in 1962 at the Watson Laboratory in New York City. Dr. Levine is the author of 19 papers on low-temperature and ultra-low-temperature physics, superconductivity, gravity wave detection, and computer technology. He holds 31 U.S. patents on touch screens, eye-controlled computers, presence sensors, and other aspects of interactive computer technology. He is currently working on ways to improve computer accessibility for people with hand tremor.

Michael A. Schappert  IBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598 (schap1@us.ibm.com). Mr. Schappert received his B.S. degree in computer science from Union College in 1987 and his M.S. degree in computer engineering from Syracuse University in 2001. He started his career at IBM in 1978, when he joined the Research Division to work on an eye-tracker system. At IBM, Mr. Schappert worked on various projects related to human-computer interfaces, such as eye tracking, touch screens, infrared presence sensors, remote infrared pointing devices, and mouse filters. He holds 11 U.S. patents, with several additional patents pending. Mr. Schappert is a Senior Member of the Institute of Electrical and Electronic Engineers and a member of the Association for Computing Machinery.