You can easily scan QR codes that are already on your phone

Android and iOS both have built-in tools to easily open QR codes from screenshots.

How to scan a QR code safely using your smartphone

Not all smartphones require a third-party app to scan QR codes. Kurt "CyberGuy" Knutsson shows you how to scan codes using ...
AOL

How Do You Scan A QR Code That's Already On Your Phone's Screen? It's Surprisingly Easy

QR codes, short for Quick-Response codes, are pretty neat. You scan the code using your device's camera, which picks up embedded information, often to share details or direct you to a website. The ...
Stuff on MSN

How to scan a QR code on iPhone and Android

You’ll be a scanner in no time with this guide to getting the all-conquering QR codes ...
Android Authority

Android's redesigned QR code scanner is finally here with one-handed improvements

Google has finally started rolling out the design refresh for Android’s built-in QR code scanner, which we first spotted a year ago. The new interface brings all the buttons close to the bottom of the ...