It seems that there is an official version:

https://www.bluetooth.com/about-us/bluetooth-origin/

Which is related to the Viking chief :)

CIao,
Giovanni.

Dear Friends & Colleagues,
An anecdotical query : does someone know why the inventors of Bluetooth choose this name? I know about the Viking chief Harald Blåtand, but why had the two developers from Intel and Ericsson in mind when they chose that name and the two runic initials?

Thanks if someone can give me some clues about this mystery!

Best,

Pierre Mounier-Kuhn

CNRS & Université Paris-Sorbonne

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Giovanni A. Cignoni
Corso di Storia dell’Informatica
CdL in Informatica Umanistica
Università di Pisa
http://progettoHMR.it/Corso