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.
Once?
You can probably get away with it more than once, after all there was that one person who was addicted to eating plastic. I will say it definitely isn’t good for you to do it, so I definitely wouldn’t recommend it.
I did eat those chicken wrappers accidentally at a buffet.