RFID technology is used for keeping fundamental data inside the microchip and transferring signals through the radio waves over a little distance with a memory card reader. There are two types of RFID tags such as active and passive tags. Active tags contain a battery and signals can be transmitted with this.
This is more expensive compared to its passive counterpart. RFID passive tags do not contain battery but they require to be activated by a reader for accessing the data that are stored on them. You may search for the RFID chip timing Hialeah Florida on the Internet to get more information on this.