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  2. Barcode reader - Wikipedia

    en.wikipedia.org/wiki/Barcode_reader

    A barcode reader or barcode scanner is an optical scanner that can read printed barcodes and send the data they contain to computer. [ 1] Like a flatbed scanner, it consists of a light source, a lens, and a light sensor for translating optical impulses into electrical signals. Additionally, nearly all barcode readers contain decoder circuitry ...

  3. Walmart is replacing its price labels with digital screens ...

    www.aol.com/finance/walmart-replacing-price...

    “A price change that used to take an associate two days to update now takes only minutes with the new DSL system,” Daniela Boscan, a food and consumable team lead at a Walmart store in Hurst ...

  4. Universal Product Code - Wikipedia

    en.wikipedia.org/wiki/Universal_Product_Code

    A UPC barcode. The Universal Product Code (UPC or UPC code) is a barcode symbology that is used worldwide for tracking trade items in stores.. The chosen symbology has bars (or spaces) of exactly 1, 2, 3, or 4 units wide each; each decimal digit to be encoded consists of two bars and two spaces chosen to have a total width of 7 units, in both an "even" and an "odd" parity form, which enables ...

  5. Barcode - Wikipedia

    en.wikipedia.org/wiki/Barcode

    Barcode. A UPC-A barcode. A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called ...

  6. Walmart is replacing price tags with digital shelf labels ...

    www.aol.com/walmart-replacing-price-tags-digital...

    Walmart is replacing the price stickers with electronic shelf labels across 2,300 stores — which could be a precursor to surge pricing. One industry analyst says: “If it’s hot outside, we ...

  7. Is Walmart's self-checkout changing? Here's what to know - AOL

    www.aol.com/news/walmarts-self-checkout-changing...

    According to Kelsey Bohl, senior manager of corporate communications at Walmart, customers at certain Walmart locations may indeed notice changes to self-checkout lanes. "From time-to-time, our ...

  8. Price look-up code - Wikipedia

    en.wikipedia.org/wiki/Price_look-up_code

    Price look-up codes, commonly called PLU codes, PLU numbers, PLUs, produce codes, or produce labels, are a system of numbers that uniquely identify bulk produce sold in grocery stores and supermarkets. The codes have been in use since 1990, and over 1400 have been assigned. [ 1] The codes are administered by the International Federation for ...

  9. Scanner Price Accuracy Code - Wikipedia

    en.wikipedia.org/wiki/Scanner_Price_Accuracy_Code

    The Scanner Price Accuracy Code is a Canadian retail voluntary practice managed by the Retail Council of Canada and endorsed by the Competition Bureau. [1] It was introduced in June 2002 [2] : 2 as Canadian retailers were in the midst of updating their point-of-sale systems with barcode readers [1] to "foster consumer confidence" with the new ...