The Radio Frequency Identification Device ( Rfid ) Essay

An RFID reader is a network connected device (fixed or mobile) with an antenna that sends power as well as commands to the tags. The RFID reader acts like an access point for RFID tagged items so that the tags' data can be made available to business applications.

An RFID interrogator, or more often called an RFID reader, is a RF transmitting and receiving device used to communicate with an RFID Tag. The device was named an interrogator because it interrogates the tags. The term "reader" is a more colloquial term, but is sometimes misleading in that many of these devices also have the ability to encode, or write information to an RFID Tag. A reader basically acts as an RF sensor because it can communicate with RFID tags that are within its range and is designed to interface with an information process system.

Regardless of the frequency, method of communication, or the power supply, the goal of any RFID system is to enable specific data to be transmitted between a portable device and the tag, and then be processed and used accordingly. RFID systems are used for objects which get lost, stolen often, underutilized, or difficult to locate in a timely manner.

The RFID is considered a significant improvement over the conventional barcode, which needs to be read by scanners in "line-of-sight" fashion and can be stripped away if the paper product labels get ripped or damaged. RFID can also facilitate inter-organizational E-commerce initiatives such as continuous replenishment or vendor-managed inventories (Smaros and Holmstrom, 2000).

While the Radio Frequency Identification Device has been in existence for almost 50 years, the use of this chip in human beings is an advancement of the technology. The chip has mainly been used for tracking animals and goods throughout is existence. Generally, the RFID chip consists of two main parts i.e. an antenna and integrated circuit chip. It's been used as an effective detection mechanism since the antenna can recognize the chip regardless of whether it's within its line of sight (Alam, 2011).

First of all, what are RFID chips, and what are they capable of? In more detail RFID stands for Radio Frequency IDentification, a technology that uses tiny computer chips smaller than a grain of sand to track items at

First and foremost the RFID IC or (Radio Frequency Identification Chip) is a tag, label, or card that can exchange data with the reader using its built in antenna and its IC (Integrated circuit ). There are a numerous amount of different things that helps tie this chip tie together, such as your personal ID, Medical history , bank information, and all of the other information government wants to know about you. The chip is inserted by doctors in one of your hands right between your index finger and you thumb they say it take no longer than thirty seconds to a minute.

“Similar technology, such as the IFF transponder, was routinely used by the allies and Germany in World War II to identify aircraft as friend or foe (Stockman, 1948).” In the 1950’s-1960’s scientists did research on how Radio Frequency could be used to distinguish objects remotely. Companies soon began to create anti-theft systems that used Radio Frequency to determine if something had been paid for or not. This technology is still used today in stores all around the world. As you enter or leave a store you walk through two gay columns on either side of the door, these are used as the transmitter and in every item in the store there is a chip. If the chip is not deactivated as the consumer checks out, then it will send a signal to the transmitter in the gray columns and the transmitter will in turn sound an alarm. This alerts the store that something has either been stolen or it was not fully scanned (Roberti, "The History of RFID Technology").

RFID was invented in Soviet Union in 1945 by inventor Leon Theremin. The main use for RFID during 1945, was to track audio information and sounds to identify if aircrafts was friend or foes of the Soviets in World War II. Once the World War was over, similar technology started to be developed such as IFF transponder, Automatic Identification and Data capture (AIDC), and Passive Reader Active Tag and much more. In modern times, RFID is used in many ways, for example in keep track of good in stores, collecting toll payments without contact, and keep track of bagging at the airport. Have you ever bought an item inside a store and wondering what happens when the cashier scans the barcode? This is RFID’s Active Reader Active Tag at work, it’s a system that use tags to transmit signals and reply once the information is received from the item scanned. In addition, Passive Reader Active Tag (PRAT) is often used in stores as well by overnight stockers and inventory staff. PRAT allows the user to scan barcodes to keep track of inventory in store, as well as order inventory. RFID has increased in applications outside of retail store chains many common ones such as badges need to access building doors, lock on newer vehicles car doors and commutation devices.

The simplest implantable microchip is a miniature passive transponder without any power source. It stores a permanent, unique identification number that can only be read but not modified. The transponder then responds by emitting the stored number. These devices are called implantable transponder or RFID tag.

RFID, or radio frequency identification, is the new system that is replacing the use of barcodes. RFID tags allow users to more quickly obtain information from the object that the RFID tag

In the paper by Michael, K, & McCathie, L, The pros and cons of RFID in supply chain management, Proceedings of the International Conference on Mobile Business, 11-13 July 2005, 623-629. Copyright IEEE 2005 they highlight key problems of RFID

RFID classified as a big revolutionize on business processes world, including supply chain management across the industries. Because of to its high capacity and to provide automated information in record time. The purpose of this study is to discuss the

RFID refers to any system that can transmit identification numbers over radio. RFID system is made up of a unique identification number, which is allocated to a specific item, an identity tag which is attached to the item with a chip capable of storing a unique identification number, networked RFID readers and data processing systems that are capable of collecting signals from multiple tags at high speeds and of pre-processing this data, and one or more networked databases that store the product information RFID is a wireless technology, which allows transmission of information without the physical connection. In its most basic form, an RFID system has two components: tags and readers. A tag (transponder) consists of a microchip that stores identification data of the item to which it is attached and an antenna to transmit this data via radio waves. A reader (interrogator) sends out a radio signal and prompts the tag to broadcast the data contained on its chip. The reader then converts the radio waves returned from the tag into digital data and forwards them to a computer system. A reader can scan an area for any tags that are tuned to the same frequency as the reader. The frequency on which the RFID system operates designates the intensity of the radio waves used to transmit

This technology consists of three parts: a reader, antenna, and a tag. The readers has a microprocessor that is connected to an external computer. A radio frequency antenna is connected to the reader and is used to transmit wireless radio signals to the tag. This antenna also receives radio signals reflected by a tag’s antenna in response. The tag has an inbuilt antenna which receives radio signals from a reader, a rectifier which converts the received signal to provide power to the tag and a