Read Ray Kurzweil's "The Singularity is Near" and you'll see that this article is actually a bit pessimistic, in another 15 years medicine will be completely unrecognizable from what it is today and computers...lets just say well all have a good laugh when we think back to the computers of today. As for being implanted with chips to track us; most of us will be chipped by them for medical reasons, security, and perhaps even neural interfaces (we have primitive but working examples of all those already). The rest is in the realm of politics and that is what were here now for.
Linear predictions based on current and anticipated technologies are pretty iffy. The human factor, what people like and don't like, is the wild card. Things have to be commercially viable to set the pace, not just possible.