In the near future, predicting that humanity refuses to cash. And it already means that all financial transactions will take place in a digital format.
If the digital format it does not say anything. It can be the same money is not just cash in your pocket, but with the help of bank cards can pay for all services or purchase. A currency will remain the same.
Going digital has its flaws such as stealing would be easier and cyber crime will increase. I am not against digital currency but there will be more crime when that happened. I can see that their will be a lot of phising sites in which people will try to get all your money for the benefit of themeselves. It can also promote some crimes like transfer of money from kidnappers and drug dealers.