With so much cool tech out there very rarely does something come along that is simple and solves an issue we all have.  Thats why I cant wait to get my hands on "Coin" an electronic device that looks and works like a credit card but what it does is store the data from all your cards, allowing you to swipe and pay with any of them while only having to carry and use the one Coin Card. Simple and cool and I love the dare to dream. Just don't give them money until its a real product.