how do new barcodes get made? How do companies make sure their product doesn’t have the same code as a different company when it gets scanned in the shop?

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how do new barcodes get made? How do companies make sure their product doesn’t have the same code as a different company when it gets scanned in the shop?

In: Technology

Barcodes are actually just a font what represent the numbers that are normally printed just below it. The most common type of barcode is the UPC (Universal Product Code) that is owned and managed by [GS1](https://en.wikipedia.org/wiki/GS1). GS1 officially licenses barcodes for products for sale, using a system where the first N numbers of the code represent the manufacturer of the product, and the rest represent the product from the manufacturer.

By sticking to this system, and making sure that their barcodes use the correct manufacturer number, they can know they wont be overlapping with another manufacturer.

Manufacturers can also pay more to get a shorter manufacturer code, so that they can have more digits left over to have more products.

A barcode simply represents a number. The left part of that number is the manufacturer code, while the right part of the number is the product code. Since no two manufacturers have the same code, there’s no chance of confusion.

Side note, but barcode scanners actually scan the white space of the barcode. The black lines are there to create the white space

There’s a really good video by WendoverProductions/Half as interesting covering this with visual info here: https://youtu.be/XPuTZMp-HE8