The Revenge of the Waitress

Think your scrooge tips will achieve their effect? Think twice but don't put the emphasis on underpaid waitresses, rather on the overall availability of credit card data reading devices as well as their vulnerability to such readers. Here's a video of another waitress clonning credit cards on the fly :

"A telltale clue that helped the restaurant and investigators zero in on the waitress: She would make quick visits to the restroom after picking up customers' charge cards, apparently to swipe them through a palm-sized device that recorded the confidential numbers."