Your statement actually falls short of the full potential of the current state of technology. Technology already exists not only that allows an entity to track a person, but also control that person's behavior. Personally, I don't know if or to what extent that is currently happening, but the technology is certainly in place. For instance...
--Microsoft and Moderna have already spoken publicly about the current ability to store data within DNA, and to apply a biological operating system and "software" via mRNA technology. (Hmm, mRNA...where have I heard that term before?)
--The current state of nanotechnology combined with advances in the applications of graphene/magnetized graphene allow for the manipulation of the spin of electrons within the atoms--including within DNA.
--The current state of quantum physics gives us the understanding and application of the principle of quantum entanglement which allows for the remote manipulation/spin of one quantum particle (say on an quantum computer/server) entangled with another quantum particle (say an electron within a individual's cell/DNA.
...and further down the rabbit hole one can go--all with the ability to back it up with current publicly available information. Oh, and don't forget to throw in the current work that CERN has done as well as what they are re-tooling and gearing up to do within the next few years (or sooner) in all that consideration as well.
I'm too lazy right now to post the links that back up my comments above, but if someone doesn't want to look for them on their own and asks very nicely, I could dig them up and post.