- Use a Raspberry Pi relay node to process, sign, and broadcast the transaction
After all, at some point, the internet is needed, right?
There has to be some kind of wallet on that Raspberry Pi, right? That requires an extra level of protection.
Sender Device (basic phone or smartphone without internet): Sends a structured SMS:
ENVIAR 0.0015 BTC A bc1qnxtsp0ew8vpkgt2u2k9ssy6s5mky8cqnzzpl6s PIN 1984
Do you think that mobile networks and sending SMS over them are safer than using the Internet? I would consider sending a PIN code or any sensitive information via SMS as high risk.
The idea is good, probably for the censorship cases you mentioned.
Although I'm not sure how someone will start their Raspberry Pi node if the internet is already censored.