Abstract: A method for detecting an object on a capacitive touch sensor of an operating terminal, wherein the object has an identifier that provides, whereby detectable information, where the identifier is detected as touch sensor data via the touch sensor and the touch sensor data is forwarded to an analysis unit, where the information of the identifier is ascertained in the analysis unit using the touch sensor data and the identifier comprises a marking, made of a conductive material, which has shapes that are connected by a connecting line, where the object is placed on the touch sensor such that the marking lies flat on the touch sensor that detects the shapes as contact points, and where the arrangement of the shapes and thus the detected contact points, provides the information.