RFID is the short form of radio frequency identification. The RFID tag or transponder includes a microchip that is having a small amount of data. It has an antenna for transmitting the data through radio waves to the RFID reader. There are two types of RFID tags such as active and passive tags.
Passive tags do not contain any battery and active tags contain built-in battery to transmit the signal. It is more expensive than passive tags. By typing the keyword RFID chip timing Stamford Connecticut on any reputed search engine, you will get required information about this.