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How to scan a QR code on iPhone and Android

You’ll be a scanner in no time with this guide to getting the all-conquering QR codes ...
Fast Company

Scanning that QR code can leave you vulnerable. Here’s how to protect yourself

QR codes have become a convenience of modern life. Just scan the black and white mosaic with your phone’s camera and you can do everything from connect to your hotel room Wi-Fi to pay for that public ...