If you’ve ever been to a department store or chain retailer, the salesperson probably asked you if you wanted to open a store credit card, which is like a normal credit card except that, in most cases, you can only use it at participating stores and businesses. Some of the biggest chain outlets and retailers, such as Target, Home Depot, Walmart, Macy’s and other clothing retailers offer this option. But how do these cards work? And can they actually help you save money? Let’s find out.