a wireless communication device includes : a close proximity communication unit configured to perform close proximity wireless communication with a count part device to receive a command signal sent from the counterpart device and to transmit a response signal to the counterpart device in response to the command signal ; a detector configured to detect an amount of a spatial movement of the close proximity communication unit ; and a controller configured to control the detector to detect the amount of the spatial movement when the command signal is received by the close proximity communication unit and control the close proximity communication unit to transmit the response signal in a first transmission power when the amount of the spatial movement is below a threshold and in a second transmission power that is larger than the first transmission power when the amount of the spatial movement is above the threshold .