Warren_Paul
Banishment this world!
Reminded me of the tracker in The Matrix, Springs. But that was a living machine that could avoid being digested. edit: wrong on details, they shot it with a machine, sucked it out of his belly button I believe.
I know in most sci-fi's I've seen they use injections, to plant it just under the skin, which are surgically removed later. But if you want it to be ingested instead then anything is possible really, but I'd wonder how much it would hurt if the tracker attached to tissue - quite a bit I'd imagine. But I'm no expert on the matter.
It could be biological, something that our body has difficulty digesting - like pepper.
I know in most sci-fi's I've seen they use injections, to plant it just under the skin, which are surgically removed later. But if you want it to be ingested instead then anything is possible really, but I'd wonder how much it would hurt if the tracker attached to tissue - quite a bit I'd imagine. But I'm no expert on the matter.
It could be biological, something that our body has difficulty digesting - like pepper.