> RFID are not good enough for this application. In the end you'd still need to take the items out of the bag to scan them, as RFID blocking tech is real, Like

> RFID are not good enough for this application. In the end you'd still need to take the items out of the bag to scan them, as RFID blocking tech is real, Like, obviously customers are blocking RFIDs en masse then the tech is a non-starter. I've never heard anyone say this was a serious threat; do you have a reference? If you're just going based on some youtube video proof-of-concept: it's not at all clear that this hypothetical attacks are more realistic than hypothetical attacks I could dream up for Amazon's system. > You'd need to chip every item in the store, which is a LOT of human labor (expensive), I am not suggesting RFIDs as an alternative for Amazon's business contracting with storeowners. I am taking a society-wide view and wondering why suppliers didn't switch from barcodes to RFIDs.