A large majority of the people in the world believe in paper money. They think that its used for buying or selling goods and services. A currency which has a physical appearance in the world.
But the upcoming world is the world of  digital currency. Because it is an easy and reliable way for sending and receiving money at any place in the world. We can send or receive money within minutes.
it is very difficult that Digital currency will be adopted worldwide. Because of the users are not aware of this new technology and they are not comfortable to use this