Plebbio was the initiative that some of us tried to brainstorm about how to make Plebbit available even without internet. The idea was to use radio waves, and how it was theoretically possible.
Well, the last few weeks I was bored and started looking more deeply into this before sleep every night.
I had a few knowledge gaps and I wanted to know what would be required.
Radio is very strict, as a civilian there are just a few things you can actually make, so the first thing was, what kind of radio can I use without a license? There are a few options, but the range is usually quite low. There was one option, tho, that started to make sense, it's Long Range (LoRa).
LoRa is basically a radio technology that can stretch for tens of km, uses basically no battery, requires minimum hardware, but has a huge drawback: data. It can only send small packages, so the only way to get it working would be with simple signals, like text-only messages... Which is exactly what plebbit is.
So LoRa could be the missing piece for plebbio, but does it work? Turns out, there are many regulations regarding LoRa gateways, which can make your device be banned if you send too much data or receives too much data. There is a limit per hour on how much you can send.
What are the alternatives? Well, if you build your own LoRa gateway, you can do some more stuff, but there are still many regulations. P2P LoRa, however, is not regulated, since it's P2P, but it would be impossible to build a network of people to work P2P... Or wouldn't it?!
Turns out, someone already did this, it's a mesh network built on LoRa called Meshtastic. It's almost everywhere in the US as I saw their map, so it could actually work. Other countries don't have a network as well built as the US, but the setup is pretty simple, cheap, and requires no kind of license since it's all P2P. So building a meshtastic transport and adding a LoRa hat to a phone is enough to get plebbit without internet.
I'll look more into this in the next few months, since I'm finishing some stuff, but I think it might be the missing piece in the plebbio puzzle.