Add Yahoo as a preferred source to see more of our stories on Google. You don't need your phone to open a QR code. You probably already know how to scan a QR code with your phone. It's simple enough: ...

QR codes are easy to use, if you know how to access the information they contain and have an internet connection. QR or Quick Response codes are one of the most popular ways to access information on ...

Written by Ron Lyons, Jr. If you're vigilant, you can find QR codes everywhere. These black-and-white squares tie the real world to the internet, and scanning them gives you quick access to ID cards, ...

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