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Radio Frequency Identification

Radio frequency identification (RFID) is an identification system that uses radio waves to send data, and RFID tags or transponders. The first patented RFID device was a passive radio transponder with an integrated memory by Mario Cardullo. At present, the technology has many applications, particularly in the retail industry because of its small size, low power demands and high levels of efficiency offered. The application of RFID is seen as the next generation of the barcode technology that is currently in use.

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How does RFID tag technology works

RFID introduction RFID taging technology is successfully used among us, but we don’t notice them always and do not think about them as they are not noticeable because we do not have directly to take any actions to transfer or read any information from RFID tags. But probably everyone notices in big supermarkets, book stores two parallel frame antenas and thicker labels on products you buy, or maybe you have RFID entrance card at your work. So lets see how this technology works. RFID is so called Radio Frequency Identification system which consists of two main parts: transmitter and receiver. The labels, access cards and even passports in some countries they have RFID transponders integrated. These transponders are called “tags”. Each tag has information programmed in it. This information can be read by reader via Radio Frequency link. Tags can be very miniature like thicker paper sheets. Simplest ones have only antena and diode. These tags only reflect signals incoming from transmitters. These are tags that are used in supermarkets and other places for securing goods from stealing. If signal is reflected, alarm is triggered. When tag is scanned by seller, it is simply electrically destroyed so it won’t trigger…

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