You also have to be sure that the RFID tags can't be easily removed from the items. Otherwise, people would just remove the RFID tags, stuff the items in the bi

You also have to be sure that the RFID tags can't be easily removed from the items. Otherwise, people would just remove the RFID tags, stuff the items in the bin, get told that they don't owe anything, and walk out scot free. But how do you do that with blueberries. Does each blueberry have to have its own unique non-removable RFID tag? There's all sorts of items at a grocery store where it's hard to guarantee the tags can't get removed from the items. That's part of why Amazon doesn't use RFID tags in their "just walk out" stores.