Radio frequency identification or RFID is known as a general word for such technologies that is involved with radio waves for identifying people or different objects. Several procedures of identification are there but the most common is to keep a serial number that is used to represent an object or a person.
A microchip is connected to an antenna that is used for enabling a chip for transmitting the information to the reader. The radio waves are converted into the digital information by the reader and pass to the computer that uses it. You may search for the RFID chip timing Akron Ohio on the Internet for more information.