The spread of electronic payments in recent years will be one of the major changes that have occurred in Japan. In most places in the city center, all you need is a smartphone and a few cards. However, it is hard to say that it is 100% compatible with credit cards and electronic payments, and it is in a delicate situation that it is not possible to have no cash at all. It is natural to think that the functions and roles required of wallets will change as payment methods diversify and their balance changes. And the wallet that is just right for such a modern age is “and W”.