RFID in retailing is one of the reasons for it being pushed in to mainstream. Players like Walmart and big retail chains are influencing the adoption of technology to a large extent.
The widespread adoption will depend on
Cost of tags , coming down from 20 cents to less than 5 cents
Establishment of Standards - Class 2 tags
Avoiding the Slap and ship approach and concentrating on Data Synch with the internal systems.