As time marches on, and security needs change and evolve, companies need to do the same thing. There once was a time when you'd hand a store associate a credit card and they'd use a physical machine to copy your card details on some paper and call it good. Today, though, our credit and debit cards are outfitted with small chips that make them much more secure than a flimsy piece of paper. They are also equipped with a magnetic strip, too, but it looks like that's on the way out.