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

You can scan QR codes and documents on your iPad using the Camera and Notes apps. Here's everything you need to know to scan ...

Mexico City has launched a test-and-trace approach to containing the coronavirus, after a rise in hospitalizations that has raised fears of a new economic lockdown in one of the world's largest urban ...