GS1 (the supermarket item barcode people) integrated their global-trade system that’s used by literally everyone with URN URIs - I worked with them when doing a

GS1 (the supermarket item barcode people) integrated their global-trade system that’s used by literally everyone with URN URIs - I worked with them when doing an RFID project a few years ago. In practice it meant just prefixing “urn:” to everything - it felt silly.