Tributes have been paid to a British scientist who became the world's first full 'cyborg' after he died aged 64.
Dr Peter Scott-Morgan refused to accept his fate following a diagnosis of motor neurone disease in 2017.
He said he wanted to push the boundaries of what science can achieve so decided to extend his life and become fully robotic.
His family confirmed the news of his passing on his Twitter account this morning.
"To Peter's amazing rebel supporters: With a broken heart, I'm letting you all know that Peter passed peacefully surrounded by his family, and those closest to him," they wrote on the social media platform.
"He was incredibly proud of all of you who supported him, and his vision of changing the way people see disability."
His followers were quick to pay their respects and called the scientist an "inspiration".
One wrote: "So sorry to hear this. He did such amazing work, with such an important vision about living with MND."
Another added: "Peter was an inspiration to able bodied as well as disabled people. My deepest condolences to his loved ones."
A third put: "What an inspiring person and what a great loss. Our world is richer because of him.'"
The doctor, from Torquay, Devon, later said he had fully completed his transition into the world's first full cyborg - called Peter 2.0.
The world-renowned roboticist has had to undergo a series of incredibly complex and risky operations during his journey.
This included developing a remarkably life-like avatar of his face before he lost any muscle.
The avatar was designed to respond using artificially intelligent body language and he has also explored eye-tracking technology to enable him to control multiple computers using only his eyes.
And the final procedure in his robot transition saw him successfully trade his voice for potentially decades of life.
