Even your thoughts are not safe

the given image describes the working of braingate

the sensor which is applied on persons brain

Brain gate, A professor at brown university has invented a machine which reads thought of your mind.

This machine can read your mind, a chip having 100 electrodes is applied over the brain then it transmits the signals to the machine it decodes the signals of the neurons and tells that what going on in your mind

Note: The images used are taken from internet.