Do math in your head to flip a switch

Yet another BCI (brain-computer interface) article.  This time, they're controlling a model train: Do a math problem in your head or sing a song, and the train goes.

Mind control

Headbands that can read and write smells, sounds, and images directly to your brain. Couple this with a fast internet connection, and imagine:

Controlling devices with the mind is just the beginning. Next, Wolf believes, is what he calls "network-enabled telepathy" - instant thought transfer. In other words, your thoughts will flow from your brain over the network right into someone else's brain. If you think instant messaging is addictive, just wait for instant thinking.

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