LOL: L'origine del nome Bluetooth
Ho riso un quarto d'ora... 
!!!
Bluetooth is apparently named after King Harald Bluetooth, a really interesting guy who brought Christianity to Scandinavia and thought it would be kinda cool that mobile and desktop devices could talk to each other over a short range wireless technology.
There’s even an interesting rune stone that shows the good king holding a PDA and laptop – see below
Source: MSDN Channel 9 - Programming Bluetooth on Windows Mobile.