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.

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 ...

The FINANCIAL — Although marketers have historically used Quick Response (QR) codes — square black and white barcodes — as marketing tools, survey researchers have often wondered if using QR codes on ...