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If you're not using the device to find your way, it is useless as far as the GPS functionality is concerned, no matter whether it's switched on or off. If I know they are looking for me, would they pick up the signal, if I switch it on for short periods every now and again? What signal? The GPS signal is sent by satellites, GPS devices receive this ...


Use the GPS to determine your position and then text or email that to your rescuers. That will be the end of the GPS's contribution to the rescue process. Staying put is generally best (saves your energy and ensures you don't move into an area they have searched and think you are not in) but that place should be safe and you should be discoverable in it. ...

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