3 is still possible but is not necessary in one embodiment the transmitter may operate for a fixed time for example 5 seconds following the removal of the finger from the activated sensor key or keys and then discontinues transmission in a further embodiment the control unit 1 remains activated as long as the contact surface 10 of the vibrator 9 is pressed against the skin in this embodiment turning the control unit 1 on and off can be effected by sensor strips on the contact surface 10 or by a moveable seating of the vibrator 9 in combination with a mircoswitch this form of executive control also minimizes energy consumption of the control device fig2 shows an embodiment of a housing design for the control device 1 in the form of a flat unit adapted to the shape of the palm of the hand and coated in anti slip fashion at its back side facing toward the hand in this embodiment the control device 1 can be inconspicuously moved for example to the head of a user hidden in the slightly curved hand a gripping depression 11 in the housing promotes retention and actuation of the control device 1 with one hand for example a switch shown at the control device 1 under the thumb in fig2 may be actuateable by a wheel 12 for adjusting a particular function already selected via the sensor keys 3 rotation of the wheel 12 may intensify the function for example the volume given movement in the direction of the tip of the thumb and diminishes the function given movement in the direction of the base of the thumb when released the switch or.