Your smartphone is full of surprises. There's an app if you want to use your phone as a magnifying glass or scanner. Tap or click here for hidden apps on your smartphone and how to find them.

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

When you build a mobile app, two kinds of risks hide inside it. One lives in the code, and the risks are hard-coded secrets, weak encryption, and forgotten debug settings. The other only appears when ...

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