Almost as old is the dispute over whose idea it actually was. Since its invention, the Universal Product Code has become the most prevalent tracking tool for products around the world. Billions of items are scanned every day in industries from airlines to pharmacies to movie theaters. The laser-powered technology behind UPCs has changed the retail industry in particular, making big-box stores, easy returns, global inventories and self check-outs possible.
It took a long time for laser-powered optical scanning to catch up and for barcodes to become a workable large-scale solution. Canning companies hated it Meanwhile, supermarket chains Kroger, Food Fair and UK-based Sainsbury’s were also working on prototypes or projects, and they were facing resistance.
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