Have you ever  thought  Why Is Bluetooth Called Bluetooth?[ I bet you did thats why you are on this page :D]
When two devices need to talk to each other, they
need to have a handshake on various parameters
before the conversation starts. The first agreement
is on the medium – will they use wires, or talk over
some wireless signal? Bluetooth is one such wireless signal (protocol)
over which two (or more) devices communicate

Strange name though isn’t it – are the bluetooth
waves invisible but blue and shaped like teeth?
Wrong! There is absolutely no relation between the name
and the meaning.
The Bluetooth protocol was created by Ericsson
(pre-Sony Ericsson) which is a major Swedish
telecommunication company. They named it after
the Danish viking king, Harald Blåtand. As legend goes, Blåtandhad
the blessed ability to bring people negotiate with each other, and
cometo talking terms. So skilled was he, that he was able to unite Denmark
and Norway together! The literal translation of Blåtand means blue-tooth, hence
the name Bluetooth for the protocol. It does precisely what Blåtand did – lets
two wireless device to communicate with each

The Bluetooth symbol has HaraldBlåtand’sinitials inscribed into it (in Runic).
The two lines stickingout of the back of the B
actually represent a Runic H – thats
H for Harald .The B for Bluetooth also stands for
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