Touchpad interface and code reader to control other devices

The invention relates to an apparatus for treating an object with a device (4) and with a detecting means (3, 10). The invention is characterized in that the detection device is connected (3, 10) with the device (4) via a communication link (9) and is provided to sense capacitively detectable by the subject matter with supplied data, and that the device (4 ) is controlled based on the supplied data with the object.