On Friday evening, SpaceX and Tesla CEO Elon Musk used a live event to release a number of rare updates about his secretive other startup, Neuralink, which is trying to build an interface between human brains and computers.
The demo focused on a device that Musk called “Link,” which appears to be the company’s prototype version of the hardware it wants to implant in users surgically. It takes the form of a coin-sized electronic unit that replaces a small piece of a user’s skull — and which, Musk said, could be used to both read and write information from the brain.
“In a lot of ways, it’s kind of like a Fitbit in your skull, with tiny wires,” said Musk. “I could have a Neuralink right now and you wouldn’t know.”
Hellbound and Down 