I’m going to point out, for the technologically illiterate, that GPS satellites do not in any way track people.

GPS satellites go “beep” and by listening to the timing of those “beeps” from different satellites, a GPS receiver on earth can determine it’s own location via triangulation. It’s a bit more complicated than that, but that’s the basic idea.

The only way you can be “tracked via gps” is if your GPS tracking device is also transmitting information using some other method (cell phone, radio signals, non-gps satellite connection, etc.)

The same supplies of the current communications. Eriksson, Nokia, Samsung.

Look no further then central American drug cartels who built their own mobile network to avoid lawful interception.

GPS devices only receive GPS signals; they do not broadcast any data. So carrying a basic handheld GPS device won’t give away your position to anyone else. However, a smarter device like a phone or InReach emergency locating device can relay your location to others.

For communications, lots of people would suddenly get really interested in VPNs and encryption (for using the existing Internet), private wireless mesh networks (for city- and region-level communication), and even amateur radio. Owners of mesh nodes or radios would need to limit their broadcasting time and/or do a lot of moving around to avoid being located.

NVIS is hard to locate without flyovers. It bounces the signal of the ionosphere kind of like a water hose shooting water straight up . Transmit and reposition. Range is up to 800km’s .

Alt flood of meshtastic nodes, without GPS data provide encrypted rebroadcast capability.

Checkout s2underground’s project- GhostNet. He’s ex military intelligence. https://github.com/s2underground/GhostNet

• GPS receiver are passive device, they do not transmit your position. However, we’ve seen in Ukraine and middle-east that GPS are easy to jam.

• As other have stated ham radio are simple to build, long range, and reliable. However, once you emmit it’s fairly easy to pinpoint your position

• I am not sure why Local peer to peer network haven’t been a thing. i am old enough to remember the era where we had network cable hanging from the windows of student residency to build a kind of building-wide LAN, looks so much easier with wifi

• Be careful with encrypted mobile phones, The Enro-chat network let the police listen to drug-lord in clear for like 2 years leading to a massive arrest. I believe it requewstd a huge work for the police to arrest them, but they’ve done-it Encryption may still help though, just don’t over estimate the budget government can put to break-it if needed (let alone all the backdoors in commercial-grade devices).

• Pigeon, dead-drop, and courrier are very efficient, it doesn’t look as cool as space hacker. but this works

Pagers and ham radio baby lfg