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A QR code is a two-dimensional barcode, typically made from black and white pixels. Denso Wave, an automotive component supplier, developed them for marking parts so they could be tracked during manufacturing. QR codes are used in mobile marketing because they allow people to instantly access information without having to download anything.
They’re gaining popularity because they’re versatile. They can be used for gathering feedback from customers to improve your products or service, increase customer engagement with photos or videos, or even advertise your business via events and promotions.