Your iPhone's compass is a feature you may not know about, but it can save your life. However, you'll need to calibrate it ...

Using a combination of GPS technology and long-range radio frequencies ... an onscreen dot then points each user in the right direction, like a compass. As a bonus, parents or pet owners can ...

It supports both GPS and GLONASS, and it has both a magnetic compass for fast direction-finding and a barometric altimeter for accurate measurements of your trail’s ups and downs. Hardware-wise ...

It's a shame how many people don't know how to use a compass, especially when the National Park Service lists it as a top 10 ...