Bluetooth

The word "Bluetooth" is an anglicized version of the Scandinavian Blåtand/Blåtann, the epithet(glorified nickname) of the tenth-century king Harald I of Denmark and parts of Norway who united dissonant(various) Danish tribes into a single kingdom.

Bluetooth Logo

 The idea of this name was proposed by Jim Kardach who developed a system that would allow mobile phones to communicate with computers (at the time he was reading Frans Gunnar Bengtsson's historical novel The Long Ships about Vikings and king Harald Bluetooth).The implication is that Bluetooth does the same with communications protocols, uniting them into one universal standard.

The Bluetooth logo is a bind rune merging the Younger Futhark runes Runic letter (Hagall) (ᚼ) and Runic letter   (Bjarkan) (ᛒ), Harald's initials.




Note :

 Runes: Runes are the letters in a set of related alphabets known as runic alphabets, which were used to write various Germanic languages before the adoption of the Latin alphabet and for specialized purposes thereafter. The Scandinavian variants are also known as futhark or fuþark (derived from their first six letters of the alphabet: F, U, Þ, A, R, and K);
bind rune: A bind rune is a ligature (combination) of two or more runes. They are extremely rare in Viking Age inscriptions, but are common in pre-Viking Age (Proto-Norse) and in post-Viking Age (medieval) inscriptions.