Strolling down the streets of Ybor City, a popular tourist area in Tampa, a well-dressed couple stops by an open doorway to watch a master cigar maker roll one the old-fashioned way. What they don't know is that someone is watching them too: the Tampa police. They've done nothing wrong, but a police officer sitting a few blocks away snaps close-up pictures of their faces anyway, using one of several dozen remote-control cameras mounted on poles overhead. The officer's computer then compares their faces with a database of wanted criminals to see if there's a match.