The POI-Warner for Sony nav-u is an add-on that enhances your navigation system with essential features.
The POI-Warner warns the user acoustically and visually of POI. It is also possible to integrate a large variety of POI collections in the map later. POI can be, for example, speed cams, danger zones (like sharp bends in the road), petrol stations, fast food chains, cash points, camping sites ... In short, anything and everything of which you might wish to be warned or informed.