Comment by citilife

I've worked alongside a group researching similar techniques, it doesn't actually need to be implants - http://bretl.csl.illinois.edu/projects

I think we were able to get up to something like 20 characters per minute, but it was largely UX design. You can go from 6 -> 20 characters. I wouldn't be surprised if the implants improve the speed, but UX could probably play an equally large impact.