Bluetooth has come to our rescue in many situations, whether it's needing to blast music in the shower or linking a printer to a computer, but not many of us know the meaning behind the iconic name or logo.
It has been a household name for 28 years, but the term has been around for much longer than that and it originated from a Nordic ruler who reigned centuries ago.
King Harald "Bluetooth" Gormsson brought Denmark and Norway together in the 10th century and is believed to have been nicknamed after his dead tooth.
His gnasher is thought to have been a dark blue or grey colour and has come in surprisingly handy when the marketing team came up with the name after it was developed in the 90s.
Bluetooth was designed to allow data to be passed from one device to another at a short range without a physical connection.
The name was inspired by King Harald's ability to unify two nations, with the ideology being the same with the gadget, to bring things together.
At first, Bluetooth wasn't meant to mean anything more than a title for an internal code, while the technology was being developed.
But due to the other options failing to be unique enough or being unable to be patented in time for the release, the engineers decided to settle with the code name.
Bluetooth's logo also boasts significance, with it being a combination of King Harald's initials in "rune": ᚼ (Hagall) and ᛒ (Bjarkan), reports The Sun.
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The king is best known for introducing Christianity to Scandinavia and at one point he ruled over what is now southern Sweden, northern Germany, Denmark and parts of Norway.
Some accounts imply that his oddly coloured tooth earned him his alternative moniker but others believe the nickname could have originated from his skin tone.
This is due to the word "Blaa", being the modern Danish word for "blue", but centuries ago the word actually translated to"dark-skinned".
While "Tan" has previously been confused with the modern Danish word for "tooth".
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