A significant part of the global trade in physical music releases, such as vinyl records, CDs, and so on has moved from physical stores to online market places such as Discogs. Many brick and mortar stores also sell their inventory online. Keeping inventory in the physical store and online store synchronized is a challenge, but can be made easier using labels with QR codes or bar codes.
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Hemel, Armijn, "Generating QR code or bar code labels based on information from online marketplaces for use on physical music releases to keep online and offline inventory synchronized", Technical Disclosure Commons, (May 01, 2019)