Radio frequency identification technology or RFID technology includes tags that include implanted receiver and transmitter. Non-volatile memory storage is included in RFID tags. They involve programmable or fixed logic to facilitate data processing and transmission. A few tags are there such as active, passive and battery operated passive.
Passive tag is cheaper compared to its active counterpart and does not require battery. RFID reader transmits radio energy which is used by the tags. You may search for the RFID chip timing Columbia South Carolina on the Internet to acquire more information on the topic.