Password Protection on Mind Reading Brain Implant
August 15th, 2025Via: Nature:
A brain implant can decode a person’s internal chatter — but the device works only if the user thinks of a preset password.
The mind-reading device, or brain–computer interface (BCI), accurately deciphered up to 74% of imagined sentences. The system began decoding users’ internal speech — the silent dialogue in people’s minds — only when they thought of a specific keyword. This ensured that the system did not accidentally translate sentences that users would rather keep to themselves.

I once saw a sign that said, “Do not look at this sign.”
How can anyone manage not to think about any of the countless things they’d rather keep to themselves while someone else is reading their thoughts?