You can scan a QR code using the camera on your smartphone, tablet, or computer — however, you may need to download an app.

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If your Android device is not scanning a QR code, there could be a number of potential issues at play.

Scanning a QR code with your phone is a common request, and should be simple, right? But it's not always as obvious how to do it as it should be. Read on for straightforward, illustrated instructions ...