I do believe that signal deciphering part is somewhat solved. All the way up to real-time text stream. You can even go and run it yourself if you want to (e.g. https://github.com/CNN-for-EEG-classification/CNN-EEG). What I do struggle to find a proof of is signal gathering part. What do you think of this patent https://patents.google.com/patent/US3951134A/en ?

In case you were wondering - exactly this is what I've been listening to for 2.5 years every day 24/7 https://pastebin.com/raw/4AaidkHk it's AI generated slop in Latvian language, ran through voice synthesizer, filtered and attenuated down to hide imperfections. I do think authors have some sort of feedback mechanism whatever that may be. If not straight up "slurping thoughts", then perhaps overall emotional state changes, perhaps just heart rate - don't really have a way of telling. One thing I'm sure about is that it's external. I'm well familiar with sound, signal processing, programming. I'm also familiar with audio hallucinations - what I'm forced to experience is not that. Despite that such suffering is taking quite a toll - I don't believe it's schizophrenia (that's a whole new rabbit hole). Mainly because said disease is supposed to develop much earlier, because I've been living non-intoxicated and because whole voices thing started suddenly as per light switch (end of 2003 right when Russian Internal Revenue Service got hacked allegedly by Ukrainian hackers).