A compass is always good. I used to work at a camping store and during the first gulf war they shut off the GPS signals that go to the normal units that everyday people buy. We didn't sell any GPS units for a while.
They work great but there is a chance that the government can simply switch them off for a while if they feel they need to. Otherwise everybody loves GPS. Simple to use and super accurate.
They work great but there is a chance that the government can simply switch them off for a while if they feel they need to. Otherwise everybody loves GPS. Simple to use and super accurate.