I'm sure it is.
But do you really want one? Where are you living in Japan? I'm constantly frustrated by the lack of places I can use it. Granted, I live in the boonies now. Take this for example: In my town there are 2 supermarkets, 6 restaurants, 3 cleaners, 1 drugstore, 2 convience stores, and NOT A SINGLE ONE TAKES A CREDIT CARD.
:banghead:
This drives me nuts.