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

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.

You can use your iPhone to scan documents, QR codes, and other files using the Notes app and your camera.

Two-dimensional barcodes called Quick Response codes, or QR codes for short, are used to store data that devices can read. While QR codes are popularly scanned via smartphones, what if you want to ...