Chengjun Liu, assistant professor of computer science, has developed a system that can verify a person's identity by using facial images. His face recognition system improves on previous technology by taking into account such factors as lighting and facial expressions. The system has tested 100 percent effective in matching videotaped images to those stored in government databases by comparing 62 features or facial landmarks. The technology can be used as a security system with facial identification replacing a physical key or a password. Such a system could also assist law enforcement officials in locating fugitives by means of video cameras strategically placed in public places. Read recent scientific papers about his work. Dr.Liu has grant support from the Department of Defense as part of the government's effort for combating terrorism using face recognition technologies.