Australian doctor finds chips, ‘self-assembling’ structures forming in Pfizer vaccine contents - LifeSite [lifesitenews.com]
Seriously doubt that the technology actually exists to create all but the simplest of "mechanical" self assembling devises. That said it may be possible to make some sort of identity tag to know who has had the vaccine. Since most of the motivation for the vaccines was financial I doubt that even that was done. As far as I can tell the head of Pfizer could care less about the crazy ideas of Klaus Schwab and his like. It's just a partnership of convenience.