Navigation will be centred around the Sony Ericsson Satio smartphone, with it's built in GPS, 12Mp camera and the addition of Viewranger's mobile mapping software.
ViewRanger™ is a unique mapping, navigation, tracking, and information tool for mobile phones that provides information about your immediate surroundings through a natural and intuitive display. ViewRanger transforms your iPhone, or your Android or Symbian based smartphone into a fully featured trail navigation system.
The benefits of using this system are primarily weight saving, excluding 1.25kg worth of maps, a stand alone GPS unit, map case, etc.The downsides are a reliance on a single electronic device, with its associated power requirements and lower reception and accuracy of position fixing, compared with stand alone GPS unit.
Obviously this approach is a compromise and as such not an easy option, it is not recommended but to those who have experience in the outdoors and want a ultralight solution.
It goes without saying that a failure in this system, combined with bad weather, could create a potentially dangerous situation.
Having said this I cannot recommend Viewranger's software enough, it is highly capable and it's features are an asset to any outdoors person.
