Abstract: The invention relates to an open-land-capable robot device comprising at least one sensor apparatus for the detection of chip apparatuses that are arranged remotely from the robot device along open land, for example a field, comprising a mobile frame on which at least one drive element for motor-driving the mobile frame is arranged, the sensor apparatus comprising at least one transmitting and/or receiving device for transmitting and/or receiving at least one electromagnetic signal, the drive element and/or the mobile frame being directionally controllable, such that the robot device can be controlled along a movement path, characterised in that the transmitting and/or receiving device comprises at least one sensor, the sensor being configured and intended to perform at least one chip recognition of the chip apparatus, preferably fully automatically, and unambiguously, preferably uniquely.