The name Bluetooth comes from King Harald Blatan (Bluetooth) of Denmark, who in the 10th century, began to Christianize the country. Ericsson, a Scandinavian company, was the first to develop this specification. See Bluejacking, Bluesnarfing, Cabir, PAN, wireless adapter and wireless LAN.
The name Bluetooth is derived from the cognomen of a 10th century king of Denmark, Harald Bluetooth. According to the inventors of the Bluetooth technology, Harald engaged in diplomacy which led warring parties to negotiate with each other, making Bluetooth a fitting name for their technology, which allows different devices to talk to each other.