This video: https://www.youtube.com/watch?v=TY6m6fS8bxU https://www.youtube.com/watch?v=TY6m6fS8bxU about the "meshtastic" project is quite interesting. It allo

This video: https://www.youtube.com/watch?v=TY6m6fS8bxU https://www.youtube.com/watch?v=TY6m6fS8bxU about the "meshtastic" project is quite interesting. It allows communication via spread spectrum LORA, which seems pretty hard to intercept. Ironically, to use it, you currently need to pair the device with a smart phone, but that's not essential. Edit: https://www.meshtastic.org/ https://www.meshtastic.org/