What are RFID tags? This Guardian article tells you, but in a nutshell they are tags that allow a company to track its products in its shop and outside, and effectively follow us and their goods around. Walmart are the first to try it out in the supermarket sector, and Benetton contemplated weaving tags in their clothes until a consumer backlash headed them off. Nice for the shop, but a tad scary for the rest of us…