In inventory control and supply chain management, RFID systems capture and manage more detailed information about items in warehouses or in production than bar coding systems. If a large number of items are shipped together, RFID systems track each pallet, lot, or even unit item in the shipment. This technology may help companies such as a Walmart improve receiving and storage operations by improving their ability to “see” exactly what stock is stored in warehouses or on retail store shelves.