Walmart. But they only care about what lowers costs. They've been researching RFIDs and stufff like this since at least the early 00s, and they rolled a lot of

Walmart. But they only care about what lowers costs. They've been researching RFIDs and stufff like this since at least the early 00s, and they rolled a lot of it out in their shipping/transit network, but I'm guessing they have too much shrinkage/theft to worry about in most of their stores. No cost savings, so it doesn't happen.