How to Use GPS Underwater
Scuba diving GPS enthusiasts have figured out how to USE GPS UNDERWATER — despite the fact that GPS signals can’t penetrate water. First, they place standard handheld GPS gadgets inside waterproof containers. Then, they tether them. While diving, when the want to know where in the world they are, they simple allow the devices to float to the surface and remain there for a minute or two. Then, they reel them back down and read the location. (props to CrunchGear and Hack A Day)
Original post by Mike
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