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.
The microchips aren’t edible because they want you to eat them. They’re edible because they know some idiot eventually will eat one.
Assuming this is even real, someone is conflating the concept of “food grade” with being edible.