The present invention relates to a position determination apparatus for the position determination of at least one RFID tag, comprising an RFID reader and a control device, wherein the control device is configured to transmit a radio signal by means of the RFID reader, said radio signal exciting an RFID tag to transmit a response signal. The position determination apparatus is movable to different locations from an original position and the control device is configured to transmit a respective radio signal at at least two different locations and to receive the respective response signal or the respective response signals.