In Japan as well. I could use my cellphone to take the train at any station in Tokyo and probably elsewhere, buy stuff at the convenience store, etc. You can ev

In Japan as well. I could use my cellphone to take the train at any station in Tokyo and probably elsewhere, buy stuff at the convenience store, etc. You can even link a credit card to your phone so you don't have to charge it with actual money. I don't think you can checkout stuff on the internet though.