We know where you are!
Global Postitioning Unit
Ever heard of GPS? You might just think of it as the thing in your car where you get directions to where you want to go. But actually it's a lot more!
A satellite orbits the earth. Could your phone have connected to it before?
GPS on iphone
GPS can now be accessed from something as easy as the iphone.
GPS satellite link diagram
A diagram of how GPS works
GPS is a space based satallite system that provides location and time information in all weather. The GPS program provides critical capabilities to military, civil and commercial users around the world. In addition, GPS is the backbone for modernizing the global air traffic system.