Shocking exactly no one. Every major store/chain/etc is doing this. What most people don't know is that Walmart is actually a Technology company, not a retail company. They basically invented the modern supply chain for retail using data. They have been able to tell what you buy IN CASH for well over a decade. You know how we know? People committing crimes having bought shit from WalMart at a self checkout were caught because walmart could track them.. Even though they were using cash.