Nt1310 Unit 3 Assignment 1 Literature Review

In its basic form, a typical RFID system has two major components, a reader and tags, as shown in Figure 3.1. These tags are made from a tiny chip, also called an integrated circuit (IC), that is connected to an antenna that can be built into many different kinds of tags including apparel hang tags, labels, and security tags, as well as a wide variety of industrial asset tags. The tag chip contains the product's electronic product code (EPC) and other variable information so that it can be read and tracked by RFID readers anywhere(Impinj 2015).

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 technology consists of three kinds of tags i.e. active RFID tags, passive RFID tags, and battery

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

RFID tags are an acronym for Radio Frequency IDentification and although can be used and applied for a multitude of purposes in the world, the greater majority of them are used to prevent theft at the supermarket or department store. However, some progress had been made in the field of electronic management, of the most notable being embedded inside a library book’s cover in order to automatically check it out to the patron to injecting the rice-sized tag into a pet or human to identify its location. The benefits of this tag are great though, much more than exploited. The RFID system contains of two primary components: the transmitter and the receiver which operate per the name by the former transmitting radio signals and the latter receiving them. The radio signals used are similar to

Radio Frequency Identification (RFID) technology has a long-standing history despite its more recent application in society and infrastructure. The understanding of electromagnetic energy in the early 1800s followed by the discovery that light and radio waves are a form of electromagnetic energy by Michael Faraday in 1846 began the process to RFID technology. The advances led to German physicist Heinrich Rudolf Hertz being the first to transmit and receive radio waves in 1887. (Landt, History of RFID, p. 7).

A passive RFID tag, more commonly used, is one that is not connected to a power source. These tags rely on the electromagnetic field that is generated by specific RFID tag readers to create enough electrical charge to transmit the stored data in radio waves (Venkateswara, 2011).

RFID is a term utilized for Radio recurrence Identification. RFID is a creating innovation and have numerous uses throughout our life.

RFID, or Radio Frequency Identification, is becoming the new technology through which data can automatically be collected and transferred, along with the capability of tracking assets such as inventory, machinery, or even people. RFID readers collect, store, and relay important data to other application systems, and receives this information from RFID tags. The two types of RFID tags are active and passive. Active RFIDs use power and can broadcast signals to the RFID readers, while passive RFIDs are powerless and only communicate with the reader when within a specified distance. Passive RFID’s are typically used to identify things, whether it be patients at a hospital, drug authentication, inventory, etc; they are very similar to barcodes.

The necessary communication between tags and readers occurs by the radio frequency communication. This communication gives the RFID powerful capabilities, but it also leaves the door open to several key threats like unauthorized access to tags and side channel attacks.

It's grouped under the category of automatic identification technologies. RFID is also called Dedicated Short Range Communication (DSRC). A RFID framework basically comprises of three parts: the RFID tag itself, the RFID reader device, and a backend IT framework. The RFID label ordinarily comprises of a silicon chip that can hold a certain amount of information, (for example, unique identification number), and an antenna wire that is used to communicate with the remote reader device. There are chipless RFID tags too, which misuse certain RF-reflecting properties of materials. In case of chipless RFID, the tags’s unique serial number is given by the material's properties, e.g. the design of RF filaments implanted in paper. The reader device communicates with the RFID tag by method for sending and accepting radio-frequency waves. The way this communication happens contrasts between passive and active RFID tags. Passive RFID tags does not have a power supply; the energy stored in the reader device's radio-frequency interrogation scan is enough to wake up the RFID tag and to enable it to send a response (that is, the RFID tag's data) to the reader device by means of reflection. Active tags contain a battery that permits them to react to the reader’s interrogation with a stronger signal, in this way increasing the distance from which the tag can be read. The backend IT framework is in charge of cross-referencing the RFID tag’s ID number with a database record that describes the object to which the tag is

RFID technology is not only used at gas stations, restaurants, and department but also at

The history of RFID can be traced back to World War 2. German pilots had discovered that if they manoeuvred the plane in certain ways, it would produce different radar signals. This concept was expanded upon to produce a system known as identification-friend-foe. These devices would receive a signal and this would cause them to either simply reflect this signal or transmit a different one. When the signal is reflected it is known as a passive system. When a new signal is transmitted it is known as an active system. This system has evolved into the anti-theft system commonly used in shops today.

Moreover, RFID tags store more dynamic information that is able to edit at every step in the supply chain. The small size of tags and invisible information guarantee security of identification. In addition, a RFID reader can process multiple tags at same time. However, its drawbacks are also not negligible. The most significant issue is the price of RFID systems. Thus, the relative expensive cost of RFID system limits its universality and makes it hard to be widespread utilization. Therefore, with the growth of technology, the chipless RFID is developed to decrease the cost and simplify the fabrication.

For more information on how RFID work, please refer to Cytron’s DIY project PR8 at www.cytron.co.my