Radio frequency identification or RFID technology is mainly used to identify the objects, people and animal. There are two types of RFID tags such as active and passive tags. Active tags are more expensive than their passive counterparts. They have built-in battery to transmit and receive the information.
Although this technology is expensive than bar code system yet, in the long it will be proved as more effective and functional. You may search for the RFID chip timing Springfield Massachusetts on the Internet for obtaining more information in this regard.