Tech Explained: QR codes

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Chances are, if you have seen a print advertisement, you have seen a QR code. Although considered 'old tech' by some, this little black-and-white boxes seem to be going through a revival. About 1.3 billion mobile QR code coupons are estimated to have been redeemed last year, and that number is expected to rise to 5.3 billion by 2022 (source: Juniper Research). Scan one with your phone, and the QR code will take you to a website or provide more information about the product or service being advertised. So, how exactly does it work? QR stands for Quick Response. The code…

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