One was assigned to a brain-computer interface to transmit the thought, while the three others were assigned to receive the thought. The first participant, located in India, was shown words translated into binary, and had to envision actions for each piece of information. For example, they could move their hands for a 1 or their legs for a 0. A technique known as electroencephalogry - which monitors brain signals from the outside - was used to record the thoughts as outgoing messages and send them via the internet. At the other end, electromagnetic induction was used to stimulate the brain’s visual cortex from the outside and pass on the signal successfully to the three other participants in France.