There's a very good chance you're reading this story on a device that supports some version of Bluetooth wireless technology. And you're very likely aware of what Bluetooth is. But just in case ...

Even the iconic Bluetooth logo pays homage to King Harald, blending two runes from the Younger Futhark alphabet: ᚼ (H) and ᛒ (B)—Harald Bluetooth's initials. READ MORE: Apple TV's chilling ...