If it's something made by the government or by banks then you should definitly know that it won't be private and they will have control of everything just like the banks right , nothing much will change .
and for what comes to the Paper money I don't think it will dissapaear , maybe on some countries yes but worldwide ?definitly not because some countries don't even use Credit cards for their transactions so ... yep
I think paper money would still survive even in the future. People has been comfortable and paper money has been part of the global trading block ever since it's origins. I think what's more possible is the time when cryptocurrencies will have a healthy interplay with paper money, which would make the trading scene even active and vibrant.