they can record your thoughts
https://www.scientificamerican.com/article/new-brain-device-is-first-to-read-out-inner-speech/
Neuroscientists have recently developed brain implants that can turn neural signals directly into whole words. When you thought about "mm. chocolate" the old devices maybe could pull out a picture of chocolate.
But today a brain reading device can decipher that you are thinking the word chocolate.
Words = thought.
Pictures are nice too but words are the essence of thought. Its what had risen humans above cavemen.
These brain-computer interfaces (BCIs) largely require users to physically attempt to speak, however -- and that can be a slow and tiring process.
But now a new development in neural prosthetics changes that, allowing users to communicate by simply thinking what they want to say.
The new system relies on much of the same technology as the more common "attempted speech" devices.
>Both use sensors implanted in a part of the brain called the motor cortex, which sends motion commands to the vocal tract.
Therefore it is a chip in the brain.
The brain activation detected by these sensors is then fed into a machine-learning model to interpret which brain signals correspond to which sounds for an individual user. It then uses those data to predict which word the user is attempting to say. But the motor cortex doesn't only light up when we attempt to speak; it's also involved, to a lesser extent, in imagined speech.
The researchers took advantage of this to develop their "inner speech" decoding device and published the results on Thursday in Cell. The team studied three people with amyotrophic lateral sclerosis (ALS) and one with a brain stem stroke, all of whom had previously had the sensors implanted. Using this new "inner speech" system, the participants needed only to think a sentence they wanted to say and it would appear on a screen in real time.
