I hope that GPS is working forever, and is not encoded by the govt. I think it’s a little early to treat GPS as a permanent utility.
(Hey, my first Travis McGee post! Love the books!) Excellent point, Matt. We have so much access to technology these days that we can easily forget that there are other ways of doing things. I believe that the military is currently able to instantly shut off certain regions and even encrypt the entire GPS system so the concern is certainly valid. If for some reason the GPS navigation isn't working in the future, a "stash" could still be recovered old-school using compass and tape. Assuming that laser range finders, internet satellite maps, and digital compasses are still functional, recovery would still be a snap.