Edible RFID?

Edible RFID tags track your food from beginning to end | DVICE: "A RFID-reading plate is definitely one way to go, but it may also be possible to embed a reader into, say, a necklace, where it could scan everything that you swallow even when you're not at home. All those data could then be sent to your smartphone, which might subtly remind you that this is in fact the fifth Krispy Kreme that you've eaten today and maybe you should take it easy before sugary glaze starts flowing out of your eyeballs."