You probably already know how to scan a QR code with your phone. It's simple enough: just open the camera app, point your phone at the code, and tap the link. What if you're on your computer, though?

QR codes are a close cousin of the bar codes on product packaging that cashiers scan with infrared scanners to let the checkout computer know what products are being purchased.

Here's how to scan a QR code when you run into one: Open the Camera app on the ‌iPhone‌ or iPad. Make sure you have adequate lighting so the camera can pick up the QR code.

Have you ever found yourself having to constantly write out or say your Wi-Fi login and password to family and friends that ...

Using QR Codes If the account you're trying to secure gives you a QR code, open your ‌iPhone‌ or ‌iPad‌'s camera app and point the viewfinder at your computer's monitor screen showing the ...