What a ridiculous idea. A genuine solution to a problem that doesn't exist. Technology is moving towards paying with your smartphone (11 year old technology in Japan, btw) and this is their idea?Suggested slogan: "Hey kids, get your entire identity stolen with just one card!" Most retailers in CA and in major cities ask to see your credit card. Show them the "Coin" (stupid name to go with a stupid idea) and you will not take your purchase home.Hey, that leads me to a second slogan "WOW! Now you can carry all your information on just one card, And use that old outdated wallet to keep your real cards ready for when the sales lady asks for it - How Fun!"