807 research outputs found

    Vulnerabilities in first-generation RFID-enabled credit cards

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    Credit cards ; Radio frequency identification systems

    Design and application of radio frequency identification systems

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    The recent world, development of effective technologies for linking the object wireless information is being prompted in various fields. Radio frequency identification (RFID) is the latest technology for automatic identification which allows the transmission of a unique serial number wirelessly. The purpose of this paper is to review RFID systems and its various components infrastructure. The components and features are still under research and being integrated in existing systems to create a marketable and potential new system. To achieve higher performance; low cost, low power RFID tag with efficient anticollision technique which provides a large throughput and flexible security mechanism is required. The review has shown different types of readers, antennas and tags which would becomes a bottleneck to reduce the RFID cost. The paper has shown details the entire components where RFID researchers will get benefit for the development of future technology. The challenges of RFID system design with the entire components (Reader, Tag and Antenna) and its advantages, disadvantages are briefly explained

    A Single Channel Attack on 915MHz Radio Frequency Identification Systems

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    There has been some speculation as to the protection offered by the Frequency Hopping Spread Spectrum utilised by RFID technology. This paper explores the construction of an attack based on the broadcast of an attack signal in a single channel. The study details an experiment on two groups of tags where the experimental group are exposed to an attack signal broadcast on a single channel. With consistent findings across both control and experimental groups the experiment clearly demonstrates that FHSS offers no protection against such an attack

    Discrete event simulator for Radio Frequency Identification systems

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    Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.Includes bibliographical references (p. 111).This thesis presents RFIDSim, a discrete event process-oriented simulator designed to model Radio Frequency Identification (RFID) communication. The simulator focuses on the discovery and identification process of passive powerless RFID tags--a category of low cost tags that harvest all of their energy from the radio frequency signals sent by the reader. RFIDSim currently supports the Auto-ID Class 0 and Class 1 UHF RFID protocols, and is designed to be an extensible framework for additional protocol implementations, as well as a modular structure that partitions the reader / tag logic separately from the signal modeling.by Kenneth Kwan-Wai Yu.M.Eng

    EXPERIMENTAL EXAMINATIONS OF THE LOGISTICS PARAMETERS OF AN INDUCTIVE RADIO FREQUENCY IDENTIFICATION SYSTEMS

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    There are two main factors determining the applicability of an inductive radio frequency identification (RFID) system for dynamic operations: the logistics parameters (communication range, amount of transmittable data, communication time and speed of data carrier) and their effects on each other. The aim of the research of the Department of Building and Material Handling Machines, Technical University of Budapest, in cooperation with OMRON Electronics Hungary Ltd., is to develop a new measuring and analysing method to examine the logistics parameters mentioned above and to simulate their effects on each other. This method helps the end-users to choose the proper RFID system to be used in a given application, where RFID system will operate in dynamic conditions and the material-flow requires a lot of constantly changing information. This study gives a description of the research, its main steps, the executed examinations and their results. Furthermore, it indicates what additional tasks have to be executed to accomplish the research

    HF oder UHF – Welche Frequenz darf es sein? : Vor- und Nachteile der gängigen RFID-Technologien

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    Die Frage nach der Funkfrequenz eines Radio-Frequency-Identification-Systems (RFIDSystems) ist in etwa wie die Frage nach der PS-Zahl eines Autos: Eigentlich keine primäre Kennzahl für den Anwender wie Höchstgeschwindigkeit oder Beschleunigungsverhalten, aber aufgrund ihrer technischen Bedeutung trotzdem maßgeblich. Ähnlich verhält es sich bei RFID: Zwar stehen eigentlich Eckdaten wie Reichweite, Speicherkapazität oder auch Kosten im Vordergrund. Doch die verwendete Frequenz ist so bedeutend für die Eigenschaften eines RFID-Systems, dass man auch als reiner Anwender kaum an der Frage »HF oder UHF?« vorbei kommt

    Space-Filling Curve RFID Tags

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    A completely passive Radio Frequency Tag is proposed, utilizing the scattering from electrically small but resonant inclusions. When placing these space-filling curve inclusions in an array and scaling each element within the array such that each element has its own separate resonant frequency, a radio frequency barcode can be developed from the Radar Cross Section of the array. The narrow bandwidth inherent to such inclusions can be helpful in packing the overall signature into a relatively small frequency spectrum. Such Radio Frequency Tags may have potential use in some applications of Radio Frequency Identification Systems

    A collision resolution algorithm for RFID using modified dynamic tree with Bayesian tag estimation

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    © 1997-2012 IEEE. A new tree-based anti-collision protocol for radio-frequency identification systems is proposed to achieve a very high tag identification efficiency. The proposed algorithm works in two phases. In the first phase, the number of competing tags is estimated through the proposed Bayesian estimation technique, while in the second phase, tags are identified using our modified dynamic tree algorithm. The system efficiency is mathematically derived and verified through simulation. Numerical results show that the proposed algorithm achieves a tag identification system efficiency of 45% and a time system efficiency of 78.5%, thus outperforming any existing collision resolution algorithms
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