(BBC NEWS) Elon Musk has unveiled a pig called Gertrude with a coin-sized computer chip in her brain to demonstrate his ambitious plans to create a working brain-to-machine interface.
"It's kind of like a Fitbit in your skull with tiny wires," the billionaire entrepreneur said on a webcast.
His start-up Neuralink applied to launch human trials last year.
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The interface could allow people with neurological conditions to control phones or computers with their mind.