Japanese outfits DNP, Tana-X, and SEARS (not to be confused with Sears), are developing an intelligent shelving system that tracks information on the amount of folks who pondered a purchase, how many tossed it in their carts, which items attracted little to no attention, and essentially anything else regarding the popularity (or lack thereof) of a stocked item.

ENGADGET: RFID-enabled smart shelves heading into stores?