Parmigiano-Reggiano makers are putting edible microchips the size of a grain of sand into their 90-pound cheese wheels to combat counterfeiters::Italian Parmigiano-Reggiano makers are using microchips to verify the authenticity of their products and thwart scammers.
If the microchip just contains a unique serial ID you can check with the producer, it would be just as easy to print it in the casing or glue it to the side of the wheel, no need to implant it in the outermost layer of cheese.