The distinctive Bluetooth logo also has ties to the Viking ruler. It is a combination of two runes from the Younger Futhark ...

Even the iconic Bluetooth logo pays homage to King Harald, blending two runes from the Younger Futhark alphabet: ᚼ (H) and ᛒ (B)—Harald Bluetooth's initials. READ MORE: Apple TV's chilling ...

King Harald's nickname was Blatand, which translates from Danish to Bluetooth. The logo comes from the initials of King Harald Blatand. It is a combination of the runic letters H and B.