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According to mic.com, an American website, a man named Ben Engel is hoping to have a Bluetooth headset installed under the skin in a few weeks in California.

The device will be placed four inches behind his ear, and the sound of the speaker will vibrate his skull so he can hear calls through his head. Using magnetic implants in his fingers, he will be able to trigger the "answer call" button.

Using bone conduction to receive sound is not a new concept. "Besides protecting your eardrum by not blasting sound into your ear canal, it has been medically demonstrated that normal frequency bone conduction causes no harm to health," Key Kawamura, founder of Studio Banana Things, said.

Being a cutting-edge "geek" in implantable biotechnology, Engle is hoping more to come in the future. He’s wishing to implant phones in his head. In his view, it’s not as brutal as putting a real phone in one’s head. What he needs is an interface that can provide and receive sounds and can also work as a third-party device to connect to the current smartphone.