QR codes (it stands for quick response, if you’re curious) are those square barcode-looking things you might have seen that, when scanned by your Android smartphone or iPhone, can send you straight to a particular webpage or to download an app, all without having to type in a complicated URL. While they used to be fairly rare to see, many businesses — especially restaurants — adopted them during the pandemic as a way of giving easy access to information like menus, without you having to touch anything.  .
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