Why rulers behave as they do (video)

(DB33) RFID microchipping of humans? Radio-frequency identification (RFID) is the use of an object (typically referred to as an RFID tag) applied to or incorporated into every product, animal, and person for the purposes of identification and tracking using radio waves. Tags can be read from a distance beyond the line of sight of the reader. Most RFID tags contain at least two parts. One is an integrated circuit for storing and processing information, modulating and demodulating a radio-frequency (RF) signal, and other specialized functions. The second is an antenna for receiving and transmitting the signal.