Whether or not the electronic money through the future is easy is a difficult question. Firstly, in terms of economic integration, this is very difficult now because each country has its own face value and money, it is difficult to synchronize, another difficulty is that the legal is unclear because each country has one private law. Secondly, the political, military, and information technology are uneven, leading to access to electronic money is not virtual reality. So how to solve this problem?
Integrating the use of electronic/ digital money into a country is not as problematic as you think it would be. China for instance as been able to integrate regular use of electronic/ digital payment system like weChat, with about half of their population using that payment option. Knowledge and understanding are all we need to be able to accept and adopt to the use of cryptocurrency. What people need to understand and see is that, cryptocurrencies such bitcoin are no different from physical fiat used for exchange of goods and services. Once the world understands this, Cryptocurrencies can easily be adopted and used world wide.