Human-electronics interfaces in which a wearable electromyography (“EMG”) device is operated to control virtually any electronic device are described. In response to detected muscle activity and/or motions of a user, the wearable EMG device transmits generic gesture identification flags that are not specific to the particular electronic device(s) being controlled. An electronic device being controlled is programmed with user-definable instructions for how to interpret and respond to the gesture identification flags.