Abstract: A system for the spatially limited activation of a control unit, comprising an activation unit and a user unit operable to transmit the control signal directly or indirectly to the activation unit, the system further including a relay unit operable to communicate with the user unit and with the activation unit, and the relay unit and/or the user unit are operable to determine, from a signal of the activation unit received from the relay unit, as to whether the relay unit and the activation unit are located within a predetermined spatial area relative to one another, the user unit being operable to transmit the control signal to activate the control unit to the activation unit only if the relay unit and the activation unit are located within the predetermined spatial area relative to one another.