Grocery store loyalty cards seem harmless. You scan your card, get a discount, and move on. But have you ever wondered what happens to the data collected every time you use that card? Many people don’t realize how much information they give away with each swipe. Your shopping habits, preferences, and even your location can be tracked. This matters because your personal data is valuable, and it’s often used in ways you might not expect. Here’s what you need to know about how your grocery store loyalty card can be used to track you—and what you can do about it.
