Bluetooth is a wireless technology that lets devices like phones, headphones, and computers connect and share data over short distances.
It was named after a 10th-century Scandinavian king, Harald Bluetooth, who united different tribes, just as the technology unites different devices. The name started as a code name but stuck.
The logo actually combines two runes from the king’s initials, H and B, hidden in plain sight on your devices. A medieval nickname for a king with a dark tooth ended up on wireless earbuds and car dashboards worldwide.
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