Input method with haptic feedback, comprising the following steps: providing an actuating element which is mounted so as to vibrate about a rest position in a vibration direction (b) and has an eigenmode having a first natural frequency; providing an electrodynamic or piezoelectric actuator for acting on the actuating element in a vibration-inducing manner in the vibration direction (b) and thus for generating the haptic feedback, which actuator has an exciter mass which is mounted so as to vibrate freely and can be driven by an electric excitation signal (S(t)), and has an actuator eigenmode having a second natural frequency; providing detection means (6, 8) for detecting at least a start of manual touching and/or actuation of the actuating element and a control unit, which is electrically connected to the detection means (6, 8), for generating the electric excitation signal (S(t)); generating the haptic feedback by way of the control unit by applying the electric excitation signal (S(t)) to the electrodynamic or piezoelectric actuator during or after detection of the touching and/or actuation, wherein a continuous amplitude spectrum (FFT(S(t))) is associated with the electric excitation signal (S(t)), and the second natural frequency falls within a second bandwidth range of the amplitude spectrum (FFT(S(t))) which surrounds a second local minimum, characterized in that the first natural frequency falls within a first bandwidth range of the amplitude spectrum (FFT(S(t))) which surrounds a first local minimum and in that the excitation signal (S(t)) is formed so that the electrodynamic or piezoelectric actuator is de-energized after the actuating element has reached the maximum deflection and, at the latest, after the actuating element has reached the maximum deflection after the first overshooting of the rest position. providing an actuating element which is mounted so as to vibrate about a rest position in a vibration direction (b) and has an eigenmode having a first natural frequency; providing an electrodynamic or piezoelectric actuator for acting on the actuating element in a vibration-inducing manner in the vibration direction (b) and thus for generating the haptic feedback, which actuator has an exciter mass which is mounted so as to vibrate freely and can be driven by an electric excitation signal (S(t)), and has an actuator eigenmode having a second natural frequency; providing detection means (6, 8) for detecting at least a start of manual touching and/or actuation of the actuating element and a control unit, which is electrically connected to the detection means (6, 8), for generating the electric excitation signal (S(t)); generating the haptic feedback by way of the control unit by applying the electric excitation signal (S(t)) to the electrodynamic or piezoelectric actuator during or after detection of the touching and/or actuation, wherein a continuous amplitude spectrum (FFT(S(t))) is associated with the electric excitation signal (S(t)), and the second natural frequency falls within a second bandwidth range of the amplitude spectrum (FFT(S(t))) which surrounds a second local minimum, characterized in that the first natural frequency falls within a first bandwidth range of the amplitude spectrum (FFT(S(t))) which surrounds a first local minimum and in that the excitation signal (S(t)) is formed so that the electrodynamic or piezoelectric actuator is de-energized after the actuating element has reached the maximum deflection and, at the latest, after the actuating element has reached the maximum deflection after the first overshooting of the rest position.