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

Turn your smartphone into a professional car diagnostic tool with a $15-30 OBD2 adapter and free apps that read engine codes in seconds.

Free software on your phone or tablet lets you scan, create, edit, annotate and even sign digitized documents on the go.

Posts from this topic will be added to your daily email digest and your homepage feed. Create backups and clear out the clutter using your phone. Create backups and clear out the clutter using your ...