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 ...

Bluetooth is a household name and changed the way information was shared when it was introduced, but it turns out there has been a hidden message in the logo this whole time The Bluetooth logo had ...

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 ...