Great Article!I wanna leave this here too: solar.lowtechmagazine.com/2015/10/how-to-build-a-low-tech-internet/Apart from the content I think it's neat that their website runs on 100% solar power.
If you're using Android, there's a couple privacy-friendly apps on F-Droid:GPSLoggerμloggerOpenTracksI've only tested GPSLogger though, which was a little on the battery-hungry side.
Whoaa... thanks for reminding me of cyriak, always loved his stuff!