1. A method for operating a user interface in a motor vehicle, wherein the user interface comprises a camera, the method comprising: filming a user who is gesticulating with a gesticulating arm, within an interior of the motor vehicle by the user being filmed by the camera to thereby produce image data; generating descriptive data of a position or movement of the gesticulating arm by a gesture recognition device, based on the image data produced by the camera; recognizing an operating gesture by associating the descriptive data with one of a plurality of predefined operating gestures based on a first classification; determining from a displacement history using the image data, the displacement history relating to a prior movement process of the gesticulating arm; determining, using a plausibility verification device of the user interface, at least one situation parameter that includes a current position of the gesticulating arm and describes a gesticulation context of the user; determining, based on how a current movement process of the gesticulating arm relates to the displacement history, the at least one situation parameter, and a second classification, whether the user is performing a possible operating gesture that the user intends to be recognized or is performing a gesture that the user does not intend to be recognized and that is to be ignored; outputting a control command to a receiver for a motor vehicle system depending on the operating gesture recognized based on the first classification if it is determined that the user is performing the possible operating gesture that the user intends to be recognized; and inhibiting the output of the control command if it is determined that the gesture is to be ignored, wherein the gesture recognition device and the plausibility verification device include at least one processor.