Cyanide equipped RFID chip! Patent Denied in Germany

RFID chips are used for many useful purposes. However, the RFID has now been used for a more disturbing purpose. A Saudi inventor applied for a patent for a Cyanide laced RFID chip. The chip is a GPS device that contains a lethal amount of Cyanide and releases it if necessary. The patent was applied for in Germany, but was denied. There are many beneficial uses for RFID chips, which are discussed in this video as well. What other ways can beneficial technology be used in a negative manner?