If cryptocurrency takes over the position of paper money as the official currency, I think there will be socialization about this to the public. No exception for those who are blind and live alone, everyone should get good socialization. The government must take part in this because the inauguration of crypto as an official currency has also been approved by the government. At least there are neighbors or volunteers who already know about crypto to teach those who are in need. Life cannot be done alone, we are social beings who need the help of others.
Cryptocurrency to take over local fiats as an official currency? Nah mate, that probably won't happen for atleast a century. Furthermore, bitcoin isn't backed by any assets like gold or other precious metals and that makes it just a pure digital currency and can only be used FOR NOW as a medium for exchange and investments or to be used against inflation. The only maximum level for now about bitcoin on the economy is to accept bitcoin as legal tender of one's nation and it's still under observation.
Sure bitcoin is a big help to us, thanks to SN. But for now, let's just be real and practical.