Bluetooth is named after King Harald Bluetooth who united Denmark and Norway. He had a dead tooth that was blue which is how he got his nickname. The bluetooth logo is made up of Harald's initials in Old Norse runic symbols https://i.imgur.com/iqpnQjR.png

Building @bountycaster (bountycaster.xyz). Co-producer on an Ethereum documentary. Previously co-founder of Scalar Capital and product at Coinbase

omg! couldn’t tell if it was real - had to google. thank you for this graphic! https://www.bluetooth.com/about-us/bluetooth-origin/