Im thinking like an micro chip implanted in our body. This system is not out of the picture because how we discover things every year, it is not impossible that in the future this things may happen and it will boom like btc.
Yeah its not impossible but theres no more security that will remain on us,since this implanted chips must be traceable and that eill bring us to vulnerability to bad elements
Look what bitfocus says about the privacy invasion we will encounter when the reason why we are here is about to be free from third party involvement
it also means, being exposed to government tracking on your every step, man. not a good idea.