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 surrounded by blank space, the quiet zone, to help the computer determine where the QR code begins and ends. QR codes can include an optional logo in the middle.

That extra amount of data is what makes QR codes so versatile. ANATOMY OF A QR CODE While it is easy for people to read Arabic numerals, it is hard for a computer.

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.

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 ...