Guys, lets get the bigger picture here, ok? Suica cards in japan are commom because is a easy way to pay for the train ticket. So, almost everyone have one, even kids. They are rechargable, it isn't a bill every end of the month, so no big surprises, since the limit is what alreadly is on the card.
Besides, in japan people don't really trhust most of the digital formats, so things like CC are not big there as they are around here. Nintendo is offering a way to people do digital purchases without worry about their data beign stolen. Last year reports about credit card data being stolen from club nitnendo japan generate a alert to change passwords.
"Hardware design isn’t about making the most powerful thing you can.
Today most hardware design is left to other companies, but when you make hardware without taking into account the needs of the eventual software developers, you end up with bloated hardware full of pointless excess. From the outset one must consider design from both a hardware and software perspective."
Gunpei Yoko
