Correction: A previous version of this story did not make it clear that 1App, and not Starbucks, ran the QR code test. The InstantScan service from 1App attempts to provide a solution for marketers ...

GREENSBORO, N.C. — You see QR codes in restaurants, parking lots, and just recently on a flyer about pet microchips. The flyer is being reposted all over social media, even on the WFMY page, after ...

We all use bar codes to buy things. Now small businesses may be able to use them to sell things. For pure techno hip factor, it’s tough to beat quick response codes. Known as QR codes, these ...

A new safety test for foodborne pathogens involves an interaction between a droplet and bacterial proteins that can be seen through a smartphone camera. Jose-Luis Olivares/MIT Here’s how it works: Mix ...