RFID doesn't work that well when more than a handful tags are present at the same time. Even at Decathlon it doesn't always work perfectly.
As I said in another comment, I think it works for Decathlon because you usually only buy a few items, but it probably wouldn't work for a supermarket where people have a dozen identical things in their cart, and often 50 or 100 total items.
As I said in another comment, I think it works for Decathlon because you usually only buy a few items, but it probably wouldn't work for a supermarket where people have a dozen identical things in their cart, and often 50 or 100 total items.