RFID refers to Radio Frequency Identification. RFID is a technology working on radio frequency of radio waves.This technology is used to automatically identify or track the objects.The object could be books of library or any item which your purchasing from a shop.Not only objects but also animals.Pet owners use these RFID chips to identify their cats and dogs.The first use of RFID chip was in the 1940s to identify and differentiate military aircraft.It is still used by the military as well as for the commercial airplanes.It can be used for automatic payment method.It can be used as student id card,passports,payment cards.It was also used for tracking packages and to prevent theft.In this RFID technology the RFID tag get attached to the object you want to track so whenever this object is in the range of the reader then the RFID tag gives signal to the reader.So it is very similar to the bar code technology.But in the case of bar code the object and the scanner should be in a line of sight.As this RFID is not a line of sight technology so as far as the object is in the range of the reader,the object is able to identify the reader and send feedback.Using this RFID technology we can even track multiple objects at the same time.
Some people have been implanting RFID chip under their skin and program them in order to perform different tasks.Colin Corvino a smartphone repair men uses his chip to open his house front door.Some people use their chips as boarding passes and some use it as a method of payment.
