Add Yahoo as a preferred source to see more of our stories on Google. You can scan the QR code on your own smartphone without needing a second device. Photo: Getty Images QR codes can be scanned ...

You may think your smartphone needs a separate app for almost everything. But many modern phones already have useful scanning tools built into the operating system. From documents and QR codes to text ...

Basically, anyone can create a QR code for free. Many generation tools do not require member registration or the installation of dedicated apps, and there is no cost for designs that involve changing ...