If you have an old #TomTom, don't throw it away. It's possible to put #OpenTom & #OSM maps on it, or an app like #TripMaster which shows lat/long, speed, & all the sensor data. Caveat: TripMaster is apparently gratis non-free sw. http://wiki.navit-project.org/index.php/TomTom https://github.com/george-hopkins/opentom http://www.webazar.org/tomtom/tripmaster.php?lang=uk