Case studies Welcome to the central library for all GS1 case studies. Use search or filters to discover case studies related to specific topics such as benefit, industry, service, standard or location. Search Standards GTIN GLN 1D barcodes RFID Services Verified by GS1 (-) GDSN Type of organisation Retailer Manufacturer Healthcare provider Wholesaler Small & Medium Enterprises (-) GDSN Clear all filters Sorry, no results found for your search criteria.