Where does the computer term "Bluetooth" come from? Did they name the system after the Viking kings?

Where does the computer term "Bluetooth" come from? Did they name the system after the Viking kings?

Christian Pirke, Munich Germany

• I'm told that King Harald Bluetooth lived in Denmark between 910-940 AD, and his name had nothing to do with a blue tooth. It means dark complexion which was unusual for Vikings. Not only did Harald not fit the classic image physically, he was a rather unusual Viking. The good King Harald brought Christianity to Scandinavia and also "united" Denmark and Norway. Similarly modern bluetooth technology 'unites' separate computers, machines and electronic gadgets.

  Jonathan Gardner, London