It could be the ultimate in political control — but it won't be patented in Germany.
German media outlets reported last week that a Saudi inventor's application to patent a "killer chip," as the Swiss tabloids put it, had been denied.
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.
The inventor said the chip could be used to track terrorists, criminals, fugitives, illegal immigrants, political dissidents, domestic servants and foreigners overstaying their visas.
"The invention will probably be found to violate paragraph two of the German Patent Law — which does not allow inventions that transgress public order or good morals," German Patent and Trademark Office spokeswoman Stephanie Krüger told the English-language German-news Web site The Local.