You always hear that cash is king, but is that really true today? Swiping a card, whether it is credit or debit, has become one of the most common methods of payment for everyday purchases. It’s so easy to pay by card that many of us have likely never stopped to think about how the system actually works. What do those numbers on your card really mean and how do they facilitate the transfer of funds from your account to a merchant’s with just a swipe? Allan Smith has recently explored this technology in his article for BusinessInsider.com. Click here to read the full article.