The name Bluetooth traces back to Harald “Bluetooth,” a Viking king remembered for bringing scattered Danish groups together under one rule. His rare gift for connection left such a strong mark on history that centuries later, engineers borrowed his nickname for a technology designed to link devices the same way he linked people. The symbol we use today even merges two runes from his initials, quietly preserving his story in every phone and headset. It’s a reminder that a piece of Viking history

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