Bluetooth, the real Royal Protocol

Everybody knows the Bluetooth wireless protocol, to exchange information between devices within a short range (up to about 100 meters).

What maybe not everyone knows is that the Bluetooth name and logo come after a tenth-century king: Harald Blaatand, king of Denmark and Norway. "Bluetooth" is the anglicized version of "Blaatand".

As Harald Blaatand unified the warring tribes of Denmark and Norway, the Bluetooth protocol makes different devices talk. That's what they must have thought at Ericsson, the Swedish company after this technology.

The Bluetooth logo merges the Germanic runes Hagall and Berkanan as shown in the picture. Those runes are the equivalent of the modern latin letters H and B, for Harald Blaatand.

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