Argument recap: For GPS, get a warrant

http://www.scotusblog.com/?p=131423

Midway through a federal government lawyer’s plea Tuesday for unrestricted power for police to use new GPS technology to track cars and trucks on public roads, Chief Justice John G. Roberts, Jr., sketched out just how the Court may well restrict the practice.   Despite an unqualified prior statement by the Court that one moving about in public has absolutely no right to expect privacy, the Chief Justice said that such a right might exist, after all, and it could trump the fact that the movement was in public.  If the Court can find a way to say just that, police almost certainly would have to get a warrant before using GPS to monitor where suspects go.