QR (quick response) codes have been around for nearly 30 years. Developed in 1994 by a Japanese engineer for the purpose of tracking components in car factories, they have evolved into a highly ...

Are they black-and-white bathroom tiles? Newfangled bar codes? Postage stamps honoring artist M.C. Escher? Thanks to increasingly prevalent smartphones, many marketers and organizations are convinced ...

QR codes, which can be easily read with a smartphone camera, are used in various areas of daily life, such as as links to websites and for cashless payments. A page has been published that provides an ...