[aceki]

RFID tags are already used for inventory management for some items/retailers. A system like this can just piggyback on the existing tags.

[_heimdall]

It would need to expand to every product though, right? From produce to packs of gum, they would all need tags that can be reliably scanned by the bag/cart.

[tylerhou]

I’ve seen it at stores where each item is relatively more expensive (e.g. a Uniqlo).