I have a friend who calls me occasionally to come help him with various little things having to do with the technology at his house. This week, one of his requests was to learn more about QR codes and ...

Among the many changes brought about by the pandemic is the widespread use of QR codes, graphical representations of digital data that can be printed and later scanned by a smartphone or other device, ...

Engineers have taken the ordinary QR code and transformed it into a high-end cybersecurity application that can protect the integrity of computer chips using advanced optical imaging and photon-based ...

A manually constructed QR code offers a rare look into how digital information is stored using simple patterns. By assembling ...

PayPal has introduced a feature on its mobile app that enables people selling goods to accept payments via QR codes. The feature means those selling goods outside the traditional retail sector can ...

EDITOR’S NOTE:In a previously published version of this article, a word was missing in Deputy Secretary of State Jordan Fuchs’ comment about bringing a photo of a ballot to a taco stand. It has been ...

Get the latest federal technology news delivered to your inbox. Among the many changes brought about by the pandemic is the widespread use of QR codes, graphical representations of digital data that ...

In most cases, QR codes use black squares on a white background, making the dots easy to distinguish. However, this is not a strict requirement, and QR codes can use any color or shape for the dots ...

Anatomy of a QR code While it is easy for people to read Arabic numerals, it is hard for a computer. Bar codes encode alphanumeric data as a series of black and white lines of various widths. At the ...