Disclosed are a system and a method for playing back contents based on a smart card, and a smart card applied to the same. The status information is transmitted over the network between or among electronic devices. The invention also enables reduction of the feed to weight gain ratio and an increase bone mass and mineral content of an animal. In particular since only non-zero filter taps need to be stored and updated, coefficient memory and coefficient calculation capacity can be reduced. Aspects of the present invention include generating the signatures using random permutation maps of the set of switch fabric ports or determining intersections of a fabric destination address with a selection of subsets of the switch fabric ports.