Comments by "deadCXAP" (@deadcxap755) on "I built a QR code with my bare hands to see how it works" video.

  1. Standard barcodes on products are not necessarily registered. Despite the different organizations involved in this process, there are a lot of duplicates. It’s trivial that some products from other countries may have randomly generated numbers) Plus internal goods that are needed to operate scales with a receipt or for products packaged in a store. So instead, each large network like Walmart or Amazon introduces its own personal barcodes so as not to depend on monopolistic organizations, which costs a lot of money for unnecessary standardization (although simply by increasing the number of lines, you can generate unique UUID-style numbers - and you won't have to pay anyone)
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