Some folks are trying to replace your credit card with your cellphone, while Dynamics, Inc. is among those trying to make credit cards better. And you know what? We seldom get excited by such things, but this video from the CES New York press preview has us seriously itching to upgrade our plastic. Card 2.0 is the computing platform powering the new Citi cards that re-write the magnetic strip depending on whether you want to spend you cash or your rewards points. The technology fits snugly in your credit card, is waterproof, has a battery life upwards of four years, allows multiple accounts on a single card, and even can be used to require a PIN before displaying the card number.
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