It’s getting way beyond facial recognition. New ways researchers are developing technologies to find, detect and monitor people are expanding rapidly and becoming more effective. Tracking people by their heartbeat, microbial cells and scent are just some of the expanded capabilities. Such advances make it urgent to restrict use of such surveillance tools when it could violate democratic principles, says Katina Michael, a Fulton Schools professor of computer science and engineering, who is also on the faculty of the ASU’s School for the Future of Innovation in Society. The impacts of these technologies need to be revealed and controlled to maintain public trust in the governments and other institutions that might use them.