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2. 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 ...

3. Barcode - Wikipedia

   en.wikipedia.org/wiki/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 barcode ...

4. MaxiCode - Wikipedia

   en.wikipedia.org/wiki/MaxiCode

   MaxiCode is a public domain, machine-readable symbol system originally created by the United Parcel Service (UPS) in 1992. [1] Suitable for tracking and managing the shipment of packages, it resembles an Aztec Code or QR code, but uses dots arranged in a hexagonal grid instead of square grid. MaxiCode has been standardised under ISO/IEC 16023.

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

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

   Sticker shock has taken on a whole new meaning at retailers and grocery stores. That’s because sticker price tags are going out of style, only to be replaced by “digital shelf labels,” or DSLs.

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. I Work at Walmart: Here Are 8 Insider Secrets You Should Know

   www.aol.com/walmart-8-insider-secrets-know...

   Stack Savvy Mobile App Coupons To go beyond in-store price-slashing, use Walmart’s official app, which allows creating personalized discounts. “The Walmart app is a goldmine for savvy shoppers ...