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Saudi 'Killer Chip' Implant Would Track, Eliminate Undesirables:
The basic model would consist of a tiny GPS transceiver placed in a capsule and inserted under a person's skin, so that authorities could track him easily. Model B would have an extra function - a dose of cyanide to remotely kill the wearer without muss or fuss if authorities deemed he'd become a public threat. Ref. Source 2
I believe that this is the start of the future where everyone will have a gps or other item in them that will routinly track them. I have a feeling in a few years all children born will be named and then have a chip inserted into them to be able to track them. I believe parents will be told that this is a way to make sure that no one can take thier child without being able to track them down. It will be a safety thing and the sheeple will buy it all hook line and sinker.