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.

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 ...

In today’s ever-changing digital world, there comes a time when we have to evaluate what we’re doing, why we’re doing it, and if it’s time to adapt a process to better suit our needs -- or pack up and ...

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 ...