Difference Between a Barcode and a QR Code: A Barcode is a 1-D code that contains just simple numbers or letters. A QR Code ...

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.

The next generation of barcodes includes a heavy emphasis on QR codes and smartphone-use. Fifty years ago, on June 26, 1974, the first universal product code (UPC) was scanned at a Marsh Supermarket ...

Not all smartphones require a third-party app to scan QR codes. Kurt "CyberGuy" Knutsson shows you how to scan codes using ...