Did you idiots miss this at the bottom of the page?

"The Bio-Trac is NOT FDA or US government approved, since this is a spoof, a piece of fiction. The Bio-Trac, or the technology for the device described above does not exist, and it will be quite some time before the technology above is developed. But, it is nice to think that it is a possibility. Every day we get phone calls asking us about implanting GPS devices into their children, family members or worse. Shame on you.

Interesting Fact: Three years ago the smallest real-time GPS tracking unit came in two parts and was roughly the size of a small shoe box the technology has developed considerably in a very short period of time. But, obviously not to the point of implantable tracking units."