Designed as a high-tech marketing resource, QR (quick response) codes have many useful applications. These (usually) black-and-white algorithmic codes are gateways to a potential multimedia nirvana.

Starting with our April 5th edition, you can expect to see “QR codes” published with some of the articles in The Journal. Short for “quick response”, the QR code was invented in 1994 in Japan for the ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

QR codes have become increasingly popular in the United States during the COVID-19 pandemic, as the technology has become easier to use and consumers have shopped at home more. Nearly half of ...

Now that Google is using the two-dimensional bar codes as part of its local businesses listings program, it's all the more reason for an app to help read them. CNET contributor Don Reisinger is a ...