Once upon a time, inventory management in the jewelry trade was a low-tech, time-consuming affair. Retailers would walk the floor, taking notes of the product numbers of jewelry displayed in cases and stored in vaults. They’d then check that list against original inventory take-in records. If there was a discrepancy, the retailer needed to “reconcile” the difference, retail lingo for determining whether jewelry was missing or had simply been misplaced. Then, about 15 years ago, UPC barcodes made inroads with retailers. Said to reduce shrinkage, prevent theft or loss, and, thus, maintain