Brain Implant Decodes Inner Speech with Password Protection

Researchers have developed a brain-computer interface (BCI) that can decode a person's internal speech with up to 74% accuracy. The device only begins decoding when the user thinks of a preset password, safeguarding privacy. This breakthrough offers hope for restoring speech in individuals with paralysis or limited muscle control, addressing previous concerns about BCI privacy breaches. The system uses AI models and language models to translate brain signals from the motor cortex into speech, drawing from a vocabulary of 125,000 words.