Just make doping compulsory, you know they all use it anyway.

I know sportspeople are generally thick but the gentleman quoted in this article takes it to extreme. What exactly would the postulated implant DO? What purpose would it serve?

If he's after something of normal implant size (grain of rice size or whatever) that functions as a GPS receiver then transmits that data to an external infrastructure without requiring a frequent recharge procedure (via induction?) and without giving the host cancer ... I think he's going to be disappointed.

There is a problem or two with that idea. You see, chip could detect preprogrammed chemicals, but what with the new ones? And what about jamming the readout with another transmitter located nearby so that you end up getting a false positive (or false negative)?

If the athletes had a couple of neurons to rub together they would tell the masters of this chipping scheme to get raped in hell.

Theese chips i must assume are the same kind that have proven to cause tumers and cancer.

Why don't they make the implant actually do the dope tests!! It must be easier for a chip in the body to pick up the large concentrations of a chemical right after taking it than them trying to pick it up in samples taken weeks later? When the athletes report to an event the chip could be communicated with a wand thing (ala harry potter) and if it reports that no drugs have been detected they would be allowed to compete, if not then they would not - simple, you also don't need a massive infrastructure of servers to monitor the movements of all these athletes and high-powered gps transmitters under the skin then!