A few months ago, the United States Food and Drug Administration gave Neuralink, the microchip technology start-up founded by Elon Musk in 2016, permission to test its devices on humans. Earlier, last September the FDA had rejected Neuralink’s application for human trials due to misgivings about Security Issuessuch as fears of the chip’s wires rattling around in the person’s skull or the device overheating.

Not long ago, the company “excitedly” announced that it was starting to implant microchips into human brains for clinical trials, looking for people with paralysis in all four limbs due to spinal cord injury or amyotrophic lateral sclerosis.

Neuralink’s chip is an implant that goes inside the skull. It is equipped with 1,024 electrodes and can receive signals from many neurons.

According to Bloomberg and Business Insider, already thousands of people have expressed their interest to insert a Neuralink chip implant, which Musk described as “a smart watch in your skull.”

Ashley Vance, one of Musk’s biographers who has visited Neuralink’s facilities about 10 times in 3 years, reports that the company has not yet put its chips in humans.

But within the next year, it plans to “chip” 11 people, while by 2030 it wants to have chipped more than 22,000.