I was thinking simple messages. The new part would be routing messages when areas are disconnected. Maybe devices would volunteer to carry messages if going the

I was thinking simple messages. The new part would be routing messages when areas are disconnected. Maybe devices would volunteer to carry messages if going the right way since storage is cheap. It is also easy to make ad-hoc networks. Data synchronization would be layer on top. I think it would be hard because of latency, and would need to use CRDT or similar. My feeling is that would only work for simple databases, and complicated databases wouldn't be supported.