Bluetooth is named "Bluetooth" after the Danish viking king, Harald Blåtand. Blåtand, translated to English, literally means Bluetooth. If you split the Bluetooth symbol in
…two, there's a Runic inscription. It may look like a B with two lines out the back, but those lines out the back form the Runic letter H. The B is, of course, the Runic version of our present-day B. Hence, Harald Blåtand. (MORE)