The Washington Metro installed a passenger information display system (PIDS) in all of its stations in 2000. The system provides real-time information on next train arrivals, delayed trains, emergency announcements, and related information. Metro also provides current train and related information to customers with conventional web browsers, as well as users of smartphones and other mobile devices. In 2010, Metro began sharing its PIDS data with outside software developers, for use in creating additional real-time applications for mobile devices. Free apps are available to the public on major mobile device software platforms (iPhone/iPad, Android, Windows Phone, Palm). The system also began providing real-time train information by phone in 2010.