The bar codes used just about everywhere nowadays use a system where the identifying number code is divided into two halves using three symbols, with two on the ends and one in the middle. The symbol consists of two lines with a space between them to the thickness of a dark line. That symbol is the number '6', so '6 *** 6 *** 6' is the framework of the barcode which appears almost everywhere today.
If these chips indeed are used widely for identifying humans and utilyze the barcode system, well I think we're in deep doo-doo, folks.