I'm a layman, but from what I understand of the mRNA technology, it can be used to program your body's cells to do pretty much anything
So, if there are nano-metals or graphene in the covid 19 injections, or boosters, I guess that cells could be instructed to assemble nano-machines
Something like a Bluetooth transceiver for example: tracking devices
And along with the CRISPR technology, there is no stopping the transhumanists