Not exactly the same but very close - Decathlon, a french sports-goods company uses RFID tags on each item to make checkout easier - https://www.decathlon-united.media/media/decathlon-united-rf...

Once you want to checkout, you drop everything you bought into a big bin near the checkout area - it calculates the total based on all RFID tags, you pay, take everything and leave.

Imo this is better than checkout in the carts - don't need to attach a payment POS and carry bags to every single cart lol.