Is Sat Nav Safe?

[tgalati4]

By putting aluminum foil around the brim of the sombrero, you can block these pesky microwave/Satellite signals from scrambling your brain.

Also, check over your shoulder frequently. They are following you.



From a safety standpoint, it's more dangerous to fool around with a navigation unit while driving.

[mcduck]

By putting aluminum foil around the brim of the sombrero, you can block these pesky microwave/Satellite signals from scrambling your brain.

Also, check over your shoulder frequently. They are following you.



From a safety standpoint, it's more dangerous to fool around with a navigation unit while driving.

Not a good idea, aluminum foil hat could actually work like an antenna, focusing and concentrating those scrambling signals to your head. Try to get some radar-deflecting paint and create yourself a stealth hat instead..

[prizrak]

As someone who has actually studied GPS units. This is how the GPS works. There is a number of GPS satellites orbiting the planet (can't remember how many, it's a fixed number) each sends out a signal with the time encoded (as well as where it is). The reciever on the planets surface uses a signal of 3 or more (3 for flat more for 3D positioning) to calculate your position by calculating the time difference between when the satellite sent the signal and when the reciever recieved it. It's basically triangulation. No data is being sent up to the satellite and in fact most units don't have the power to send it back.

Cell phone GPS works differently in one way. It sends it's location updates to the cell company through the cell network (tho you can be triangulated with cell sites just as well), which is where the RMS like issue of privacy comes in.