In recent years, a growing number of retail RFID use cases have clearly demonstrated the benefits of being able to track inventory at the item level, leading to better shelf replenishment and fewer out of stocks. Many retailers quantify the benefits of reducing out of stocks not just at the item level (potential lost sales) but at the transaction level, since retailers closely track the number of items that comprise the average transaction (e.g. 3.6 items/sale). Using that example, an out-of-stock item (especially in a core category such as denim) could result in lost sales of an additional 2.6 items that were to be purchased with it.