You finally cleared up your credit card enough to get yourself new clothes, cosmetic products, or a bunch of groceries. You grab your stuff and walk up to the till, anxious to get home.
You're so excited about having the shopping done, you're not even bothered by the man behind you texting on his cell phone. You pull out your credit card and start chatting with the teller.
You think nothing of it and go home. It's a few weeks later when you get your credit card bill--only to find a number of charges you didn't make. Little did you know that guy behind you pressing the buttons on his cell phone... wasn't really texting; he was just subtle about having his phone out so he could activate the camera and record those seconds when your credit card is passed back and forth, so he could register the numbers on it.
How to avoid: always be wary of people around you using a phone when you're pulling out your credit card. If you see someone, make sure to cover as much of the numbers as you can, just in case. It could just be a guy talking to his girlfriend about what he needs to get at the store--but it could be the scammer who maxes out your freshly paid-off credit card.