How is a microchip edible? Big as a sand grain? How does it work? How long has this tech existed? How many microchips have I eaten? Do they stop working if I eat them?
It's not edible. The chip is in the packaging. Chipping packaging is normal and the headline is funny but sensational
Now producers have been trialling the most modern of authentication methods – microtransponders about the size of a grain of salt inserted into the labels found on the rind of 120,000 wheels of parmigiano reggiano.
Edit or it might as well be edible no one knows since no ones eaten cheese with the packaging
If a tiny chip is embedded in glass or a similar biologically inert coating, and it's still small enough to pass your intestines without noticing, then it's edible. RFID can be very small, has no internal power, and only responds to a nearby request ping, which also gives it a few milliseconds of power.