If youve been asked to swipe your credit card lately, you may have noticed a new machine at checkout. Or perhaps you opened the mail to find a brand-new Visa with a shiny microchip embedded in the front. In fact, by the end of the year, your whole wallet will have undergone an overhaul, with all your old credit cards replaced with new-and-improved chip cards. Here are the details: Whats a Microchip Card? These microchip cards have been around in Europe awhile, but are relatively ...