3. The system of claim 1 , wherein the actuator includes a moving portion that causes the force, wherein the moving portion is protected from contact by the user.
1. A system, comprising: a computing device comprising a memory and a processor communicatively coupled to the memory, wherein the processor is configured to execute processor-executable instructions stored in the memory to: generate a graphical interface that includes a graphical object; obtain at least one spoken utterance; control an interaction of the graphical object within the graphical interface based on the at least one spoken utterance; and generate an activating signal based on the at least one spoken utterance; a user interface device configured to receive the at least one spoken utterance, provide the at least one spoken utterance to the computing device, and control the graphical object within the graphical interface based on the provided at least one spoken utterance, wherein the graphical object comprises a graphical representation within the graphical interface; and a vibrotactile device comprising an actuator disposed within a housing of the user interface device, thereby protecting the actuator from contact by the user, the actuator configured to receive the activating signal, wherein the activating signal causes the actuator to impart a force via the housing, the actuator comprising a rotating mass actuator having a shaft and an eccentric mass coupled to the shaft, wherein the rotating mass actuator produces the force by the mass rotating about the shaft around an axis of rotation and wherein a center of mass of the eccentric mass is offset from the axis of rotation thereby causing the force when the eccentric mass rotates about the shaft.