Walmart has plenty of haters. But for many consumers, Walmart's prices just can't be beat. You can't afford to be choosy when you're on a tight budget. If price is not so much of a concern for you, what if you discovered that Walmart wants your personal data? And not just data about your shopping behavior, which we already give hand over fist to Amazon in the name of fast shipping. Walmart is interested in what's going on in your body while you shop. The company wants to collect this data is a particularly creepy way: through the handles of...