RFID tags are ~10c (Impinj) and are getting cheaper each year. they're widely used in apparel stores. think it'd be tough to justify attaching them to low value

RFID tags are ~10c (Impinj) and are getting cheaper each year. they're widely used in apparel stores. think it'd be tough to justify attaching them to low value items in a grocery store. self checkout prob more effective using computer vision