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
we can see that paper money are slowly disappearing because of those digital currency that are appearing now. thats what happening in the world right now. one day you will notice that there are no paper money, money will be intangible. we cant be sure about the future but we can be sure that something strange will happen.