The curious origins of Bluetooth's name

When Giulia came home from school today, she was anxious to tell me what she learned about a Viking King and his legacy. She told me the story of King Harald Gormsson, who ruled Denmark and Norway from c. 958 to c. 986. Harald is mainly known for introducing Christianity to Denmark and consolidating his rule over most Jutland and Zealand. However, what sparked my interest is that Harald was nicknamed “Bluetooth”, and, in 1997, the Bluetooth wireless specification design was named after him. »