The "use-by" and "best-by" dates printed on milk cartons and gallon jugs may soon become a thing of the past, giving way to more accurate and informative QR codes. A new Cornell University study finds ...
QR codes containing all the information of the dairy and a unique alphanumeric identification code are placed by law on every wheel of Parmigiano-Reggiano cheese (Photo by David Silverman/Getty Images ...