Scientists Have Connected The Brains of 3 People, Enabling Them to Share Thoughts

https://www.sciencealert.com/brain-to-brain-mind-connection-lets-three-people-share-thoughts

This is fancy as one science fiction coming reality!
Neuroscientists have successfully hooked up a three-way brain connection to allow three people share their thoughts – and in this case, play a Tetris-style game. The team thinks this wild experiment could be scaled up to connect whole networks of people.
It works through a combination of electroencephalograms (EEGs), for recording the electrical impulses that indicate brain activity, and transcranial magnetic stimulation (TMS), where neurons are stimulated using magnetic fields.

Brain-to-brain network allows three people to share their thoughts

Are you thinking what I’m thinking?

https://www.engadget.com/2018/09/30/brain-to-brain-network/

The first “social network” of brains lets three people transmit thoughts to each other’s heads

BrainNet allows collaborative problem-solving using direct brain-to-brain communication.

https://www.technologyreview.com/s/612212/the-first-social-network-of-brains-lets-three-people-transmit-thoughts-to-each-others-heads/