How does the barcode system works?

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Like how is there no overlap of barcodes at all? There’s are millions if not, billions of items around the world that have unique barcodes. Are they differentiated per country or something?

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Anonymous 0 Comments

There are about 5 different major barcode standards in the world. Most of the West uses the upc standard. In that standard there are literally 100 billion different possible unique numbers. So running out is not really a problem

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