Cash-Back Credit Cards are a great way to make money by spending money. But if you’re like me and carry multiple cards (currently I have 6 in my wallet) in an effort to take advantage of all the free cash, you might forget which card you use for which purchases (especially if your cards reward system changes categories every quarter, like Chase Freedom & Discover More). Well I found an easy & free solution for that problem. Simply put a piece of tape on the front of the card and write the cash-back categories on it, when they change simply replace the tape with a new piece. Problem Solved.