I'm sure that paper money has no future. Soon all will move to electronic invoicing. Now you can use your smartphone as a personal wallet. But I am afraid that people will make chipping. It will be convenient, but it will be the end of our privacy.
Government will make changes to paper money, which may be eliminated and replaced by a digital system, because technology is created to make it easier for us in life. So also with finance, bitcoin a great innovation to be adopted by government.