Someday people will laugh at our awkwardness of typing in queries into a computer or cell phone to get information. Voice input is even more disruptive.
Electrodes on the face and jaw can detect subvocalizations, or words that are thought and not said, and a computer can translate these into words. A bone conduction speaker forms the other side of the interface.
This could provide mental access to an internet of information, a form of electronic telepathy and help for handicapped individuals.

Arnav Kapur, a researcher in the Fluid Interfaces group at the MIT Media Lab, demonstrates the AlterEgo project.
Credit: Lorrie Lejeune/MIT
"MIT researchers have developed a computer interface that can transcribe words that the user verbalizes internally but does not actually speak aloud.
The system consists of a wearable device and an associated computing system. Electrodes in the device pick up neuromuscular signals in the jaw and face that are triggered by internal verbalizations -- saying words "in your head" -- but are undetectable to the human eye. The signals are fed to a machine-learning system that has been trained to correlate particular signals with particular words.
The device also includes a pair of bone-conduction headphones, which transmit vibrations through the bones of the face to the inner ear. Because they don't obstruct the ear canal, the headphones enable the system to convey information to the user without interrupting conversation or otherwise interfering with the user's auditory experience."
https://www.sciencedaily.com/releases/2018/04/180405133040.htm
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