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关键词： Supply chains   Security   Trajectory   Databases   RFID tags   Production   Location awareness   Verifiable tag path query   RFID   supply chain   product traceability  

摘要： In this article, we propose Double Edged (DE)-Sword, an incentivized verifiable tag path query scheme. DE-Sword queries tag records stored across a path of participants within an RFID-enabled supply chain in a verifiable way. Different with previous works, DE-Sword works in a dishonest-data owner model in which participants are the owners of tag records and may be dishonest. DE-Sword introduces a novel double-edged reputation incentive mechanism to encourage participants to behave honestly;and couples it with cryptographic primitives to ensure query verifiability. We evaluate DE-Sword through game theory, security analysis, and performance evaluation. The game theory and security analysis shows that DE-Sword guarantees query verifiability. The evaluation results show that DE-Sword incurs low overhead in supply chain systems.

关键词： Metasurfaces   Slot antennas   Antenna arrays   RFID tags   Resonant frequency   Antenna measurements   Reflection   Artificial magnetic conductor (AMC)   metasurface   radio frequency identification (RFID)   slot antenna  

摘要： A novel low-profile (<0.005 lambda) jigsaw-shaped metasurface for platform-tolerant nested-slot radio frequency identification (RFID) tag antenna is proposed in this letter. It consists of a 4 x 4 array of rippled-edged patch units with a central through-via. Compared with the widely used patch-unit artificial magnetic conductor structure, the proposed jigsaw-shaped metasurface is proved to suppress the surface waves effectively and reflect the electromagnetic waves in phase in the industrial scientific medical band of 902-928 MHz, therefore, it could improve the frequency and radiation stability of the nested slot RFID tag antenna on different platforms, and enhance the radiation performance of the tag antenna. The prototype of the metasurface was fabricated and measured as an interlayer of the nested-slot RFID tag and different platforms. The measured operation frequency band remains stable, and the measured reading range has a range deviation of less than 8.7% on different platforms.

关键词： IoT   RFID tags   Ultra-lightweight   Mutual authentication  

摘要： RFID (Radio Frequency Identification) is a crucial application technology in the Internet of Things (IoT) technology. The IoT terminal device needs to be authenticated before accessing the IoT network in order to avoid security holes. Due to the limited resources of the tag side in passive RFID systems, ultra-lightweight RFID authentication protocols are often used in such systems. Based on the characteristics of the ultra-lightweight authentication protocol, we propose a safe and efficient mutual authentication protocol which uses only bitwise operation including XOR and circular left-rotation operation. Cryptanalysis shows that the proposed protocol can prevent many known attacks and has better security performance than some existing ultra-lightweight protocols. In addition, performance evaluation shows that the proposed protocol performs better than the existing ultra-lightweight protocols in terms of computational cost, storage requirement and communication cost.

摘要： In order to discuss the construction and application of the SPD automated management module for interventional high-value consumables based on RFID sensors, a high-value medical consumables management information system based on radio frequency identification (RFID) technology is designed and implemented in this paper. It not only realizes the scientific, effective, and full-process monitoring of high-value medical consumables management but also provides managers with scientific and efficient management methods, combined with HIS and SPD's "Unified Receiving Platform" system and barcode technology, to achieve drug barcode acceptance. The experimental results show that the goal of zero inventory management of high value medical consumables is realized and the whole tracking management of use, warehousing, billing, and payment, the high value consumables can be traced back to suppliers and manufacturers and patients, and the inventory, accounting, and payment status can be checked at any time. It proves the effectiveness of RFID technology in the construction and application of SPD automatic management module for high-value consumables.

关键词： Radio frequency identification (RFID)  

摘要： Radio frequency identification (RFID) has been widely has broad applications. One such application is to use RFID to track inventory in warehouses and retail stores. In this application, timely identifying the missing items is an ongoing engineering problem. A feasible solution to this problem is to map each tag to a time slot and verify the presence of a tag by comparing the status of the predicted time slot and the actual time slot. However, existing works are time inefficient because they only verify tags one by one in singleton slots but ignore the collision slots mapped by multiple tags. To accelerate the identification process, we use bit tracking to verify tags in collision slots and design two protocols accordingly. We first propose the Sequential String based Missing Tag Identification (SSMTI) protocol, which converts all time slots to collision slots and enables tags in each slot to reply to a designed string simultaneously. By using bit tracking to decode the combined string, the reader can verify multiple tags together. To improve the performance of SSMTI when most tags are missing, we further propose the Interactive String based Missing Tag Identification (ISMTI) protocol. ISMTI improves the strategies of designing strings for each collided tag so that the reader can verify more tags using shorter strings than SSMTI. Besides, ISMTI can dynamically adjust the verification mechanism according to the proportion of missing tags to maintain time efficiency. We also provide theoretical analysis for proposed protocols to minimize execution time and evaluate their performance through extensive simulations. Compared with state-of-the-art solutions, the proposed SSMTI and ISMTI can reduce the time cost by as much as 39.74% and 68.87%. Copyright © 2022, The Authors. All rights reserved.

关键词： Support vector machines  

摘要： Accelerated ripening through the exposure of fruits to controlled environmental conditions and gases is nowadays one of the most assessed food technologies, especially for climacteric and exotic products. However, a fine granularity control of the process and consequently of the quality of the goods is still missing, so the management of the ripening rooms is mainly based on qualitative estimations only. Following the modern paradigms of Industry 4.0, this contribution proposes a nondestructive RFID-based system for the automatic evaluation of the live ripening of avocados. The system, coupled with a properly trained automatic classification algorithm based on Support Vector Machines (SVMs), can discriminate the stage of ripening with an accuracy greater than 85%. © 2022, CC BY.

关键词： 图书馆   RFID   物联网   可信性建议  

摘要： 自2006年厦门集美大学诚毅学院图书馆率先实施RFID技术以来,RFID技术已在国内图书馆界发展使用十余年。RFID在图书馆界广泛应用的同时也正面临瓶颈,本文将物联网技术发展与现有图书馆RFID进行对比分析,反思该技术发展存在的问题,并提出一些可行性建议。

关键词： 5G mobile communication systems  

摘要： RFID technology is an emerging automatic identification technology in recent years. Based on the research on RFID indoor positioning system, this paper proposes a clustering SPA relative positioning algorithm based on nearest neighbours in the 5G network architecture system. After analysing the algorithm process, simulation experiments are carried out. The experimental results show that the algorithm can effectively improve the positioning accuracy of the system. Based on the research on the application of RFID in hospital medical care management, the medical care mobile management system is designed, mainly including the database system of the system, the handheld data acquisition and wireless transmission system based on the 5G network platform, and the management running on the desktop PC. The system has been designed in detail, with a view to RFID technology can be applied to medical care management.

关键词： Business improvement   Innovation   Performance management   Process design   Qualitative  

摘要： Design:: This briefing is prepared by an independent writer who adds their own impartial comments and places the articles in context. Purpose:: This paper aims to review the latest management developments across the globe and pinpoint practical implications from cutting-edge research and case studies. Findings:: RFID technology can fundamentally change logistic networks and operational strategies through the ability to gain live oversight of item and inventory movement and levels, but adoption can be costly. Originality:: The briefing saves busy executives, strategists, and researchers hours of reading time by selecting only the very best, most pertinent information and presenting it in a condensed and easy-to-digest format. © 2022, Emerald Publishing Limited.