Colloquially, many know GTIN as a barcode, but technically, GTIN is the number found beneath the barcode symbol itself, and can therefore also be used for other technologies such as 2D barcodes and RFID tags.
On behalf of the think tank ONE\THIRD PlanMiljø has, in collaboration with GS1 Denmark and the University of Copenhagen, conducted a mini-pilot study: "The effect of smart barcodes in reducing food waste in retail."
The purpose of the study is to shed light on the potential food waste reduction effects of implementing smart barcodes in the Danish retail sector by uncovering experiences from the retail chains Meny in Norway and Woolworths in Australia, where smart barcodes have already been tested and partially implemented. And the positive result is far from surprising.

Head of Standards, Sustainability & Partnerships, Mads Kibsgaard: "There are no 'magic wands' that will make food waste disappear, but for our part of the food industry, there is no doubt that smart barcodes are one of the best solutions. With the countless possibilities that the technology brings, we at GS1 Denmark are particularly pleased with the ultimate recommendation: the importance of collaboration across the industry, authorities, and other stakeholders."
Based on the two cases from Norway and Australia, the ONE/THIRD report estimates the total reduction potential in Denmark to be 21,009 tons per year, corresponding to a reduction of 28%. In the continued work with smart barcodes, it is also recommended:
Outlined below is how smart barcodes can, in practice, reduce food waste throughout every link in the supply chain.

Read the ONE/THIRD study featuring the two cases from Norway and Australia.
The study was prepared by Katja Øder Schlesinger, Mads Werge, and Simon Wittus from PlanMiljø in collaboration with Mads Kibsgaard, Head of Standards, Sustainability & Partnerships at GS1 Denmark, and Professor Bent Egberg Mikkelsen from the University of Copenhagen.
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GTIN (also known as EAN) stands for “Global Trade Item Number” and is the number sequence shown beneath a barcode symbol.
GTIN (EAN) is a global standard used to uniquely identify digital and physical products, allowing the barcode to be scanned anywhere in the world throughout the supply chain.
A GLN (also known as EAN) allows you to uniquely identify physical, functional, legal, or digital entities. This can include the sender, receiver, buyer, seller, supplier, manufacturer, delivery location, billing location, store, or internal departments.