The direct interface between the nervous system and computers represents the last stage of communication between humans and machines. When it comes to performance, reaction times and precision, brain-computer interfaces are potentially superior to all other input devices. They are already in use today to help patients control their neuroprostheses. The reason why brain-computer interfaces are being increasingly used is down to the growing understanding of how the human nervous system works. Over the long term, the brain will become the operating system in the interaction with the increasingly digital environment. In the not too distant future, it will be possible to connect brains for communication purposes and transfer educational content to them.