Find My iPhone is a great, useful service. If you misplace your handset, or if someone steals it, you can use the service to locate it so long as it’s still on the grid.
It also tracks all your other Apple devices so long as they are connected to a network of some kind.
Now it will give you driving directions to find your missing device. This is very cool. We do wonder if it being Apple Maps-based could be a problem. However, it’s a device being tracked, so I imagine there isn’t so much of a risk of it totally getting the location wrong. Maybe just road directions, if anything.
You can update it through your iPhone, or download it from the link below.