GPS tech is definitely decades old, I could dig out a couple of handheld units I have in a box that would qualify for that distinction (circa 2000) and those were a few models into what was available to consumers let alone unis and governments.
Using that specific application for decades is more of a stretch, but technically possible if you count all Mapfactor navigation and they first used it on a PC (released 2002 apparently). Even on mobile devices it’s not that far off qualifying as possible though (released 2007 on Windows CE so 16 years).
Thanks for the idea, looks like converting them might open up some more options for viewing. I’m only intending to view already created maps rather than creating data so I don’t need GIS suite functionality once I get the maps on the phone (really only need geolocation, marker points etc are nice but not necessary), viewing as an OsmAnd layer sounds promising if I could get that to work easily for multiple files.
I don’t have many paid apps, but one I do like is Peakfinder. It’s not something I use all the time but it does become rather handy when you’ve climbed up a hill to a viewpoint and now want to figure out which other hills you’re looking at.
I read that as saying what people saw on their screens while playing the games was most truthful, not as a reference specifically to the TV show.