What is a QR code? A QR code (short for Quick Response code) is a two-dimensional barcode that can be read by your smartphone camera. QR codes provide quick access to product information, promotions ...

GREENSBORO, N.C. — The checkout has changed over the years. First, cashiers manually punched in the price of an item, then the scanners made check-out much quicker, and today, there's self-check-out.

The iconic barcode, a staple of product packaging for nearly 50 years, is set to be replaced by an advanced alternative. QR codes, recognized for their flexibility and efficiency, are poised to take ...