This post was first published on 29th September, 2014.   When we first go grocery shopping, as a kid, we always wondered what those black and white, think and thin lines indicated. A big puzzle eventually gets answered as we grow up. We now know that they are codes represented in the form of bars, a method for automatic identification and data collection. It has evolved from a punch card system, designed to speed the purchasing process, to the modern barcodes we…