I was in Iceland 2 years ago, and I could not get fuel for my rental car anywhere with my chipless and PINless card, and had to pay a large amount of money to have the agency fill it. Even though the USA has finally started to roll out chip based cards, half the places I go to have the chip slot, but say to swipe instead. It is confusing. We also still do not have PINs so if your card is lost, it can still be used for fraud.