That would be the coolest thing ever happen to the World economy.
Think i am going from usa to thailand,i am not carrying any hard cash.I have got my smart phone and i have crypto currency in my phone wallet.I am doing all my payment with those crypto currency.How nice that will be,but some people are not happy with such things.They want us to endorse dollars first then when you will reach your desired country exchange your dollar to the local currency.Only then you can spend your money.Why can't we think about a border less world and a kind of crypto currency which will be applicable to any country.