Turn off your maps app: The case for getting a little bit lost

When was the last time you used a physical map to find your way? Or drove across the city with a street directory balanced precariously on your knees?In this age of navigation apps, you can simply enter an address and a robotic voice will plot the course and guide you straight to your destination.But if your phone dies, or the satellite technology fails, would you be lost without it?We meet two people who say there are important benefits from unfurling a map once in a while.