The present invention refers to a passive echo cancellation device for use in a full-duplex communication system and its signal transceiving method. The device includes a main body, a housing, a carriage, a first elastic member, a stopper member, a second elastic member, and a button. Live downloaded sports statistic data feeds can be analyzed by a plurality of processes to determine whether or not one or more sport statistic triggers have been satisfied. Further, the lower base portion 26, 36 of each ski link bracket 20, 30 contains a set of ski member holes 28, 38. The medium use mechanism incorporates and uses the merchantable content with the medium.