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关键词： Microprogramming   Codes   Security   Protocols   Wireless sensor networks   Wireless communication   Communication system security   RFID   computational RFID   WISP   EPC protocol   secure wireless firmware update  

摘要： Emerging ultra-low-power tiny scale computing devices run on harvested energy, are intermittently powered, have limited computational capability, and perform sensing and actuation functions under the control of a dedicated firmware operating without the supervisory control of an operating system. Wirelessly updating or patching firmware of such devices is inevitable. We consider the challenging problem of simultaneous and secure firmware updates or patching for a typical class of such devices-Computational Radio Frequency Identification (CRFID) devices. We propose Wisecr, the first secure and simultaneous wireless code dissemination mechanism to multiple devices that prevents malicious code injection attacks and intellectual property (IP) theft, whilst enabling remote attestation of code installation. Importantly, Wisecr is engineered to comply with existing ISO compliant communication protocol standards employed by CRFID devices and systems. We comprehensively evaluate Wisecr's overhead, demonstrate its implementation over standards compliant protocols, analyze its security, implement an end-to-end realization with popular CRFID devices and open-source the complete software package on GitHub.

关键词： RFID system   Quadratic residue   Square root modulo N   Authentication protocol   Security   Privacy  

摘要： Nowadays, Radio frequency identification (RFID) plays an important role in many real-life applications for remotely identifying objects. RFID system works over a wireless communication environment. Because of this, the RFID system is not secure against various attacks such as user private data leakage, location tracking, and replay attack. To overcome these security flaws, we propose a quadratic residue-based authentication scheme for the RFID system. The scheme uses square root properties of quadratic residue to prevent existing possible attacks. Formal and informal security analysis of the proposed scheme shows that the proposed scheme resists various attacks. In addition, we use BAN logic and Scyther tool to simulate the scheme. The simulation results show that the proposed scheme withstands all possible attacks. Performance evaluation illustrates that the proposed scheme is efficient under a resource-constraints environment. Moreover, the proposed scheme does not store the private information of RFID tags in its database and identifies a tag with constant-time complexity.

关键词： RFID   contactless   tracking   sensing   material   shopping behavior  

摘要： RFID technology has recently been exploited for not only identification but also fine-grained trajectory tracking and gesture recognition. While contact-based (a tag is attached to the target of interest) sensing has achieved promising results, contactless sensing still faces severe challenges such as low accuracy and inability to sense multiple targets simultaneously in proximity, restricting its applicability in real-world deployment. In this work, we present Tamera, a contactless RFID-based sensing system, which significantly improves the tracking accuracy, enables multi-commodity tracking, and even material and shopping behavior recognition. We successfully address multiple technical challenges, and design and implement our prototype on commodity RFID devices. We test the positioning accuracy of Tamera in a 5m x 6m laboratory. Tamera achieves a median error of 1.3 cm and 2.7 cm for contactless single- and multi-commodity tracking, respectively. In our laboratory, two shelves commonly found in the supermarket are arranged and the goods are placed on them. Tamera successfully localizes and identifies the material type (metal, plastic, paper, and glass) of the commodities on the shelf with an accuracy higher than 95%. Tamera successfully recognizes four shopping behaviors (taking commodity, replacing commodity, buying commodity, and invoking commodity) with an accuracy higher than 93%.

关键词： Radio frequency identification   Medical devices   Automation   Economic study   Interventional cardiology  

摘要： This work presents the eight-month assessment of the mobile RFID (radio frequency identification) technology implementation for the management of sterile medical devices in an interventional cardiology department. Several indicators dedicated to stock management, organizational impact (within the pharmacy and the department) and economic impact were collected. The scope of MDS tracked by RFID was defined as well as the new supply circuit. In total, 297 (83%) references were managed by RFID. At eight months, the number of MDS units in stock has decreased by 35% and the number of overstocked references by more than 50%. The value of the inventory decreased by euro 30,196 (17%) in three months from an initial amount of euro 17,995. This decrease has been maintained at eight months. The average time spent by the pharmacy technician (PPH) was 66 min/d. The paramedical team gained 180 min/week. By integrating the cost of the equipment, the annual subscription and the PPH cost, the benefit is estimated at euro 9555 the first year (then euro 17,155 the following years). To conclude, RFID has allowed a significant reduction of the stock and its control over time while securing the supply circuit adjusted to the activity. The limits are the absence of interface between the dedicated software and the ordering software as well as the consequent time dedicated by the PPH to this new management mode. & COPY;2022 Published by Elsevier Masson SAS on behalf of Academie Nationale de Pharmacie.

关键词： RFID antenna   UHF band   Wireless communications   WBAN   High gain   FSS integrated superstrate  

摘要： In this work, a novel flexible slotted radio frequency identification antenna with frequency selective surface sheet as a superstrate is designed at Ultra High- Frequency global band (860 to 960 MHz) for wireless body area network. The reflection coefficient of this proposed antenna is equivalent to - 15 dB, voltage standing wave ratio is equivalent to 1.4 and radiated gain is measured up to 4dBi with the bandwidth of 200 MHz at resonant frequency 880 MHz. Furthermore, a layer of FSS is designed and placed over the proposed antenna to improve the antenna's characteristics. The reflection coefficient's value is improved to - 47.8 dB, with VSWR equivalent to unity with the value of 1.06, and the gain is further enhanced to 6.3 dBi when FSS is integrated with the antenna, which gives us better impedance matching. The proposed FSS integrated-RFID antenna have a better read-range and high gain with better immunity to electromagnetic interference from adjacent bands.

关键词： Mobile antennas  

摘要： RFID sensing leveraging backscatter signal features (e.g., phase shift) from tags has gained increasing popularity in numerous applications, but also suffers from negative impacts of environmental multipaths. Past works to address it rely on extra customized devices, labor-intensive offine training or frequency channel hopping, all of which are nonubiquitous or ineffective for real-life adoption. This paper presents RoSense, a universal method to alleviate multipath reflections' impacts by spinning the reader antenna, thus enabling more robust RFID sensing. Besides, RoSense requires no RF devices or offline training, and operates in a nonintrusive manner. The key insight of RoSense is to exploit two properties of line-of-sight (LOS) signal when spinning the antenna, i.e., the linearity of phase changes and stability of received signal strength to attenuate the non-linear and non-monotonic effect of multipath signals and refine the phase shift of LOS signal. We have implemented a prototype of RoSense with COTS devices and studied two cases for evaluation: material identification and object localization. Experimental results show that RoSense can improve the material identification accuracy by 16.22% and reduce the mean localization error by 39.93%, greatly outperforming the state-of-the-art solutions. © 2023 Copyright is held by the owner/author(s).

关键词： RFID tag   anti-high-power microwave   graphene films   highly thermal conductivity   UHF  

摘要： In this paper, a radio frequency identification (RFID) tag is designed and fabricated based on highly electrical and thermal conductive graphene films. The tag operates in the ultrahigh-frequency (UHF) band, which is suitable for high-power microwave environments of at least 800 W. We designed the protection structure to avoid charge accumulation at the antenna's critical positions. In the initial state, the read range of the anti-high-power microwave graphene film tag (AMGFT) is 10.43 m at 915 MHz. During the microwave heating experiment, the aluminum tag causes a visible electric spark phenomenon, which ablates the aluminum tag and its attachment, resulting in tag failure and serious safety issues. In contrast, the AMGFT is intact, with its entire read range curve growing and returning to its initial position as its temperature steadily decreases back to room temperature. In addition, the proposed dual-frequency tag further confirms the anti-high-power microwave performance of graphene film tags and provides a multi-scenario interactive application.

摘要： Building information modeling (BIM) and radio-frequency identification (RFID) technologies can assist with problems in the construction quality inspection process, such as difficulties with the intelligent positioning of components, data replication, and insufficient feedback information during rework and maintenance. A novel technology BIM-FRID-integration is competent for multiparticipant information sharing in construction sector by collecting, transmitting and processing the quality defect information found in the construction process. In this study, an intelligent positioning inspection system to ensure building quality was developed using leading BIM software (Autodesk Revit in a Microsoft Visual Studio environment) and RFID handheld terminal devices. To verify the effectiveness of the framework proposed in this paper, the system was applied to a practical project, and its modeling, unique identifier (UID) components, and other information generation and export processes were analyzed. The results demonstrated that the BIM-RFID-integrated building quality intelligent inspection system proposed in this paper could realize the correlation and interaction between the BIM model and the entity component information as well as accurately locate any components with quality problems and provide quick feedback of quality inspection information and visual construction annotation disclosures.

关键词： Middleware  

摘要： The safety of workers is significant when talking about large risky workplaces such as construction job sites. Therefore, we proposed a UHF-RFID tag antenna that can be used to identify various Job site equipments and also construction workers by tagging their wearable helmets. Here, the compact, low profile, and simple structured platform-tolerant RFID tag antenna is proposed and optimized for metal sheet and ABS-based safety helmets. Furthermore, WTMiddleware (Worker Tracking Middleware) using Javascript, CSS, and HTML has been implemented to demonstrate a real-time secured web-based remote access of workers to provide their actual on-site monitoring and tracking of construction equipment carried/operated by the workers for tracking solutions. First, the fabricated tag's performance was tested successfully in an outdoor scenario on various mountable materials such as wood, glass, plastic, and metal. The tag yielded a reasonable read range of 5.9 m on metallic sheet and 7.1 m on plastic with the highest read distance of 9.3 m on a glass sheet. Also, the measurement setup along with developed WTMiddleware was deployed in an actual workplace to demonstrate practical utility of the designed tag affixed on workers' safety helmets. It was observed that all the workers wearing tagged helmets were successfully identified, tracked, and monitored. Also, their real-time on-site details, working zone, and complete personal details were accessed through a developed web page application via WTMiddleware.

关键词： Cost reduction  

摘要： Points-of-care (PoCs) augment healthcare systems by performing care whenever needed and are becoming increasingly crucial for the well-being of the worldwide population. Personalized medicine, chronic illness management, and cost reduction can be achieved thanks to the widespread adoption of PoCs. Significant incentives for PoCs deployment are nowadays given by wearable devices and, in particular, by RFID (RadioFrequency IDentification) and NFC (Near Field Communications), which are rising among the technological cornerstones of the healthcare internet of things (H-IoT). To fully exploit recent technological advancements, this paper proposes a system architecture for RFID- and NFC-based PoCs. The architecture comprises in a unitary framework both interfaces to benefit from their complementary features, and gathered data are shared with medical experts through secure and user-friendly interfaces that implement the Fast Health Interoperability Resource (FHIR) emerging healthcare standard. The selection of the optimal UHF and NFC components is discussed concerning the employable sensing techniques. The secure transmission of sensitive medical data is addressed by developing a user-friendly "PoC App" that is the first web app exploiting attribute-based encryption (ABE). An application example of the system for monitoring the pH and cortisol levels in sweat is implemented and preliminarily tested by a healthy volunteer. © 2023, CC BY.