Microsoft Demos Computer Interface That Takes Input From Muscle Movements
This new technology relies on electromyography (EMG), which is basically the muscular equivalent of an EEG — electroencephalography, the basis for brain-computer interfaces. An EMG detects the electrical charges created by muscle cells after they receive a signal from the brain. By placing an armband around the muscles in your forearm — the muscles that control your finger movements — an EMG can accurately detect the movement of your fingers. With training, software can then convert specific EMG readings into gestures, which can be fed into the computer as normal keyboard, mouse, or touchscreen inputs.
(via Microsoft demos muscle-computer interface, air Guitar Hero now a reality | ExtremeTech)