Always listen to others to say that a RFID tracking system is so Niubi but I never used it, I once went to a friend’s house inadvertently chatting to hear him say the RFID tracking system, my friend of this product is very research it was heard because I was introduced to a RFID tracking system I was on a product which has been interested in it, if not my friend introduced me to this so I don’t know if it is a RFID tracking system product is so good, I use the a lot of products but make me feel most Niubi is this product, it is to refresh my own view of the world.