The brain chip company has successfully implanted a brain chip into a person. It's a paraplegic and this allows this person to thought-control their wheel-chair and even do high fidelity computer inputs (good enough for playing games)
At this time the brain chip is one way communication only, only relaying thought-commands from the brain to external devices, but nothing flows back into the brain. But if this thing is going to become the tech that fixes most handicaps it will have to become 2 way communication. And there are serious worries about it becoming a attack vector for brain-hacking. If brain chips were free open source technology, protected by a very diligent community, and absolute brain privacy was vigorously enforced (as in death penalty for brain privacy violations), that probably would mitigate risks enough though.
For able people this promises hands-free computing. I suspect people would not undergo brain surgery to get this unless they need it to fix a handicap. Because of the medical risks and it eventually turning into obsolete e-waste rattling in your skull.
This thing uses thousands of wires connected to electrodes directly stuck inside the brain. So people who have this implanted, probably become vulnerable to electromagnetic fields. Getting an MRI scan is probably off the table. Humans generally are not affected by magnetic fields, even extremely powerful ones. Hence why there is lots of technological EM in the human environment. People who get the brain chip would have to be even more careful than those who have a pacemaker. Nukes produce a big EM pulse, so the brain-chipped people will die first in WW3. Safety wise this really would benefit from optical data links that electrically isolate the brain.
Whats the real world application going to be ?
My hunch is it'll get used for medical and military purposes (soldiers thinking what their shoulder cannon shoots at)
If the functionality can be replicated with a wearable headband/cap it might enter general use, but if it's surgical implants only, it'll remain a niche.
vid not related
https://farside.link/invidious/watch?v=d4po_OK_w4I