Errors messages when ordering fast food at an airport? Have your error message Your Way! When I saw this blue screen of death, I had to try this novel payment system at Burger King. Sadly, the chain hired a cashier to sit next to the automated ordering system. She physically swiped the card and pressed the buttons for me. Hopefully in the future such intervention will not be necessary, but the machines must not be too robust. Windows.
Japan has already mastered the art of automated payment. There are some ramen restaurants where a customer would never even see eye-to-eye with a wait staff member. Here's an example from a ramen restaurant I tried in Fukuoka. Most restaurants have automated kiosks to order food.