How Did Bluetooth Get Its Name?

Featured in Ripley's Believe It or Not!Most of us are familiar with Bluetooth, the short-range wireless technology that allows us to pair our smartphone and other devices with equipment such as earbuds and speakers. However, Bluetooth’s connection to a 10th–century Danish king is less well known.
King Harald “Bluetooth” Gormsson earned his nickname because he had a tooth that was dark blue/grey and probably dead, according to Bluetooth.com. So, what’s the connection