Method, computer program, control and or regulating device, device for detecting contact with an operating element, and corresponding operating element

Method of one of the above claims, characterized in that a conclusion is drawn as to the intensity and/or the nature of the touch contact (36, 46) from the extent and/or of the nature of the deviation of the actual vibration characteristic (FR;

• PIN;
• SIN) from the desired vibration characteristic (FR0;
• PIN0;
• SIN0).

Arrangement (12) for detecting the touch contact of an operator-controlled element (10) of a machine by a user, the arrangement having a detection device (16), which is connected to the operator-controlled element (10) and responds to a touch contact of the operator-controlled element (10) by the user, characterized in that the detection device (16) is so configured that the detection device determines an actual vibration characteristic (FR;

• PIN;
• SIN) of the operator-controlled element (10), which changes in dependence upon a touch contact of the operator-controlled element (10) by a user during operation and a data processing unit (20) is provided, which compares the signal of the detecting device (16) to a desired vibration characteristic (FR0;
• PIN0;
• SIN0), which is present in a defined state of the operator-controlled element (10) and outputs an announcement in dependence upon the result of the comparison (48, 52).