This story originally featured on Popular Science. Quick Response or QR codes were popular even before the coronavirus pandemic, but now they’re everywhere: from restaurant menus and tickets, to ...

First invented for use in industrial applications in Japan in the early 1990s, QR codes were being widely used by consumers when smartphones with QR readers became more prevalent in the 2000s. After ...

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Dianna Gunn built her first WordPress website in 2008. Since then, she's poured thousands of hours into understanding how websites and online businesses work. She's shared what she's learned on blogs ...

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