1. A device, comprising: a processor; and storage accessible to the processor and bearing instructions executable by the processor to: receive first input from at least one electromyograph; based at least in part on the first input, determine whether a user is authorized to manipulate the device to execute at least a first function; in response to a determination that the user is authorized to manipulate the device to execute at least the first function, permit manipulation of the device to execute at least the first function; subsequent to permission to manipulate the device to execute at least the first function and during a single session in which the permission is granted based at least in part on receipt of the first input, receive second input from at least one electromyograph; and based at least in part on the second input, determine whether the second input is one or more of: associated with the user, and associated with another person authorized to manipulate the device to execute at least the first function.