Hacker allegedly cracks Tesco discount barcodes
reverse engineered the discount barcodes used by Tesco. The self-proclaimed "Jesus-loving Physics geek" was in a store on Friday when he discovered a pattern in the barcodes for produce on sale. For those who don't know, Tesco is the third-largest retailer in the world measured by revenues (after Wal-Mart and Carrefour). The British grocery chain also operates in China, the Czech Republic, France, Hungary, India, Isle of Man, Japan, Malaysia, Poland, the Republic of Ireland, Slovakia, South Korea, Taiwan, Thailand, Turkey, and the U.S.