Since September 11th, the US has maintained a (now-infamous) "no fly" list of suspected terrorists forbidden to board an aircraft. Now, the Canadian government is making the same move. Unlike the Americans, the Canadians will have an appeal mechanism so people can be removed from the list, and unlike the Americans they are unlikely to use the list to target the political enemies of the government of the day (that sort of thing being less tolerated in Canada than it is in the Home of Freedom). But that doesn't mean its not a problem. While the list itself is small - reportedly only 500 to 2,000 names - the fact that names are not unique identifiers means that there is an enormous potential for false positives - tens or even hundreds per name. This will see thousands of innocent Canadians whose only "crime" is having a name which is similar to that of a suspected terrorist effectively forbidden to fly. And that is simply not acceptable in a free and democratic society.