This is a great way for any business to use bitcoin for payment. Airport operators can tap into an additional source of revenue and save money at the same time, passengers can avoid time lost at currency exchange booths, and the bitcoin community has a chance to showcase just how useful digital currencies can be.

However, you won't be able to travel freely between different countries or regions without the right documents. These documents help you to prove who you are and what your status is in a particular country or region. These documents will always be essential whatever type of payment system you use. Unless you meant a Visa credit card?