Whether or not it turns out to be a revolutionary device, Coin has our tongues duly wagging. This credit card-sized invention renders obsolete the require to carry about a wallet full of plastic—by storing salient info from a slew of credit and debit cards inside its slender profile. As the video (under) demonstrates, a sensible telephone app allows the user to transfer content from every credit card to Coin, after which Coin essentially morphs into whichever card is chosen by the user for a transaction. Goodbye, bulky wallets adieu, clumsily rummaging around for the right card. Eager adopters will have to wait till mid-2014 for a Coin, but pre-orders are getting accepted now.