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 Country Colombia Ireland Serbia United States Standards GTIN GLN 1D barcodes 2D barcodes GS1 DataMatrix RFID Services Verified by GS1 (-) GDSN (-) GDSN Clear all filters Sorry, no results found for your search criteria.