Bluetooth

We are familiar with the word and technology Bluetooth. Because it allows us to send photos,videos, songs to a mobile,PC or any other devices with Bluetooth connectivity at free of cost and also used for internet connection. There is also Bluetooth Headset, printer, scanner, Refrigerators, etc.
There is a contentious history behind the name 'bluetooth'. In 19th century King Harold Blueetooth ,king of Denmark started a project to connect his provinces to transfer messages. In memory of his project the name Blueetooth was given to the technology to connect computers and other electronic devices that invented in the 21st century.