RE: Blessed are those that do DD...Impinji = item level tracking.
Sirit/Intermac = supply chain.
They are two totally different solutions, as Jeep implies the warehouse needs to receive the goods via the supply chain before they item level tag it.
That's not to say one can't setup a item level RFID system without a supply chain RFID system. However I believe the real value in RFID is to tag the item at the production stage, enter the supply chain, and finally at the item level.
The information in the tags can now be used for just about anything you want. And what's more the information on the product can be shared quickly. So if I bought a barbecue at Walmart today that information can be relayed to the production site! Talk about just in time ordering. Walmart can sell more of any popular product without having to increase their inventory.
It will come, just a matter of time.
John