I only travel outside the country maybe 3 to 4 times a year but whenever I do I wish there is just one currency that I could use whether it is "real" money or virtual money. I just think it would be more efficient if there is one common currency since the world is getting smaller anyway and traveling the world has been in vogue for quite some time now. I can use my credit card, yes, but it often makes me wonder how much money would I be charged at the end of the billing period if say the currency exchange changes a lot from the time I swiped my credit card. And well, I just don't want the bank charges. Is there a possibility for a crypto to be able to provide this service?