Pocket-Lint: With mobile phone navigation apps slowly gobbling the traditional Satnav market, GPS makers like TomTom have to continue to develop new ways of making their devices still relevant in a world where many of the competitors competing products are free.
Five years ago the main way to beat the smartphone was to pack your portable navigation device with more tech than you could possibly imagine. Trouble is, smartphones are clever things these days so that trick doesn't work.
