Even beverage cans now contain QR codes, that contain a link to sweepstakes for merch, hype generation, brand promotion, to improve engagement with customers.
In the following images an expired promotion QR code link can be seen printed on the textured outer printing of the REIGN energy drink can 300mg caffeine, B3, B6, B12, Potassium only 10 calories, fun flavor options.
Context of Barcodes & QR codes
2D barcodes contain vastly more data than 1D laser line barcodes, epitomized for retail purchase item laser scanners that started with HeNe gas lasers into a galvanic scanning mirror that projected linear laser pattern at the 1D barcode, then CCD imager analog to digital compute sensor system object recognition able to read the line array barcode image and convert it in near real time to an inventory tracking code, which provides the retailer with numerous tools to improve inventory management by being able to track how many of which items are selling on what day and time of day, allowing for more accurate sales forecasting or informing what to order on the next shipment of items, more of what sells best, and less of what sells slower, essential for thin supply chain, to minimize inventory value loss of items that sit on shelves without moving as sunk cost depreciation, to improve profitability.
QR code's Online Big Data
Do to the information explosion, big data, web, internet, QR codes or 2D barcodes enable links to websites if a person opens the camera app on their smartphone and points the phone camera at the printed QR code, there inside the camera app a link will appear to the website, if you click that link, it will open your phones web browser app and automatically enter the linked website, the URL code encoded in the QR code enables automatic redirections from the phones initial photo app scan, link click to browser launch to the website link encored in QR code. Real life printed QR codes generate more website traffic.
Legacy Barcodes
While barcodes to phone camera web links are also possible with standard 1D line array barcodes, typical barcode contain so much less data, they are not practical for web links. Longer length barcodes can serve up enough data for a web link, but there are practical limits for printing and size of 1D barcodes, UPC item codes, by going 2D in a QR code that's hundreds of times more data in a smaller area, that is much easier to scan with your phones camera.
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