I don't care what that lunatic Alexander Graham Bell says, and I don't care what stupid little one-time demos he has in his lab, the telephone is never going to take off.
The electric resistance of the skull is way too high to send any useful information through electric stimulation, and magnetic stimulation is inherently blunt.
For the same reason, the complexity of the information that you can get with EEG is very limited. There's a lot of noise, and the spatial resolution is very coarse.
Useful brain to brain communication requires invasive surgery, in order to put sensors and stimulation electrodes next to the cortex. It will happen, and it will be revolutionary, but the method described in the article is not a progress in that direction.
