An internal U.S. Department of Homeland Security document indicates that a controversial program designed to predict whether a person will commit a crime is already being tested on some members of the public voluntarily, CNET has learned. If this sounds a bit like the Tom Cruise movie called "Minority Report," or the CBS drama "Person of Interest," it is. But where "Minority Report" author Philip K. Dick enlisted psychics to predict crimes, DHS is betting on algorithms: it's building a "prototype screening facility" that it hopes will use factors such as ethnicity, gender, breathing, and heart rate to "detect cues...