That ‘Free’ Rewards App Isn’t Free — You’re Paying With Your Data

You punch in your phone number at the grocery store checkout. You scan your coffee app for points. You swipe your rewards card at the clothing store. Feels like you’re winning, right? Free stuff, discounts, points. But those programs aren’t free — you’re just paying in a different currency: your personal data.

Here’s what’s actually being collected. Every time you use one of these programs, the store logs exactly what you bought, how much you spent, when you were there, and how often you come back. Over time, that adds up to a surprisingly detailed picture of your life — your routines, your habits, your preferences. California’s Attorney General put businesses on notice about this exact issue, calling out how brick-and-mortar stores are “finding new ways to profit” from the data they collect through loyalty programs.

And profit they do. Many companies don’t just keep that data for themselves — they sell it to third-party data brokers. These are companies whose entire business model is buying data about you from multiple sources and packaging it together. So your grocery store sells your purchase history, your coffee app adds location patterns, your clothing store contributes your spending habits — and a broker combines all of it into one very detailed profile of you as a consumer.

Researchers at the Wharton School put it plainly: when data gets sold to brokers, buyers can pull together information from your credit card, your shopping history, your car dealership, your online purchases — and suddenly they have a “very rich sense” of your behavior. The problem, as one researcher noted, is that “the consumer doesn’t necessarily know that their data is being sold to this third-party broker” — or who that broker turns around and sells it to.

That last part matters. Once your data leaves the original company, you have almost no idea where it ends up. It could be insurers, employers, advertisers, landlords. The chain doesn’t stop at the first sale.

So what can you actually do about it?

A few options that actually work: Some stores offer the same sale prices without requiring a loyalty account — it’s worth asking or looking around. If you really want to use a program, you can often sign up with a separate email you don’t care about and minimal identifying info. It won’t block everything, but it limits how precisely they can tie data back to you personally. You can also check if your state has privacy laws — California’s CCPA gives residents certain rights to see what data companies hold on them and request deletion, though some exceptions apply. Other states are catching up.

None of this means you have to swear off every discount app forever. But it’s worth knowing the deal you’re actually making. You’re not getting something for nothing — you’re trading something real for those points.