CNN CNN Newsroom December 21, 2013 16:20:00
>> you're paid, you get your receipt, you move on. >> reporter: bypass the cash register and swipe your card on the smartphone. >> this is an iphone. >> an ipod, iphone, and also works with an ipad. you've gone into a big-box retailer, made a purchase, employee is here to help, you know, and you hand them your card, and they run the card through. >> reporter: and that's where shoppers are at risk. >> once a credit card transaction is run through, we're able to steal them off, steal the credit card transactions before they're encrypted, if they're not encrypting in the hardware. >> reporter: th...