Radio-Frequency Identification, yes this is the full form of the nowadays popular tech word
RFID. RFID refers to small electronic devices that consist of an antenna and a small chip
inside the device. In real this small chip is not very much small instead it is capable of
crying 2000 bytes of data or less.
The one RFID device serves the same purpose as a magnetic strip or barcode serves, it generates a unique ID code for the object in which it is laid on. And in order to retrieve the identifying information the RFID devices are scanned just like the magnetic strip or barcode.
RFID device does not need to be positioned precisely relative to the scanner. Unlike previously used technologies. RFID devices work within a few feet of the scanner. For instance, after purchasing the products from a grocery shop or departmental shop you do not need to take out every product from the basket, one just need to set the bag on the scanner. The scanner will be able to query all of the RFID devices and sum the products within a fraction of seconds.