scholarly journals Um sistema alternativo para a verificação da autenticidade de produtos utilizando criptografia visual

2020 ◽  
Vol 41 (2) ◽  
pp. 117
Author(s):  
Rodrigo dos Santos Cicareli ◽  
José Carlos Pizolato Junior

Fraud and counterfeiting have caused various inconveniences to manufacturers and the product consumer market. To avoid counterfeiting and, therefore, bring a higher level of trust and security in commercial transactions, several authentication techniques for physical products have been proposed. Among the techniques commonly employed, the most popular are QR codes (Quick Response Code), Holographic Seals, and RFID (Radio Frequency Identification) tags. This paper aims to propose an alternative product authentication system that applies the visual cryptography technique (NAOR; SHAMIR, 1995). This system employs two masks that, when overlaid, allow visual authentication by the user, without the need for any computational processing. The use of this authentication system for the need in question has not yet been reported in the literature.

Author(s):  
Rahmat Sufri ◽  
Yuwaldi Away ◽  
Rizal Munadi

<p>Teknologi terbaru yang dapat diterapkan untuk identifikasi yaitu <em>Radio Frequency Identification</em> (RFID) yang merupakan sistem identifikasi tanpa kabel bisa melakukan pengambilan data dengan cepat, mudah tanpa harus bersentuhan dan dapat digunakan untuk operasi otomatis. Sistem RFID terdiri dari tag, pembaca, middleware, aplikasi program dan server. Seiringin perkembangannya muncul juga teknologi pilihan lain yaitu QR Code atau <em>Quick Respon Code</em> dalam mengatasi masalah identifikasi data menjadi efektif dan cepat. Untuk mengakses informasi <em>QR Code</em> berbeda dengan teknologi RFID yang membutuhan perangkat khusus atau <em>reader</em>  sebagai pembaca tag melainkan sangat mudah hanya membutuhkan perangkat camera atau <em>webcam</em> kemudian difokuskan QR Code pada kamera dan akan langsung terbaca dengan cepat. Saat ini dalam mengidentifikasi data medis masih dilakukan secara konvensional yaitu mengetik nomor ID dengan keyboard maka ada kemungkinan terjadi kesalahan dan membutuhkan waktu yang lama sehingga tidak efesien, untuk mengatasi masalah tersebut menggunakan RFID dan QR Code adalah solusi yang tepat, dengan RFID dan QR Code hanya cukup menempelkan pada RFID reader selanjutnya kode akan dilakukan pecarian langsung secara otomatis. Manfaat yang diperoleh pada penelitian ini adalah mengetahui perbandingan RFID dan QR Code melakukan pencarian data medis, dan dapat mengidentifikasi pencarian data medis dengan lebih mudah, cepat dan akurat.</p>


Sensor Review ◽  
2017 ◽  
Vol 37 (3) ◽  
pp. 338-345 ◽  
Author(s):  
Yawei Xu ◽  
Lihong Dong ◽  
Haidou Wang ◽  
Jiannong Jing ◽  
Yongxiang Lu

Purpose Radio frequency identification tags for passive sensing have attracted wide attention in the area of Internet of Things (IoT). Among them, some tags can sense the property change of objects without an integrated sensor, which is a new trend of passive sensing based on tag. The purpose of this paper is to review recent research on passive self-sensing tags (PSSTs). Design/methodology/approach The PSSTs reported in the past decade are classified in terms of sensing mode, composition and the ways of power supply. This paper presents operation principles of PSSTs and analyzes the characteristics of them. Moreover, the paper focuses on summarizing the latest sensing parameters of PSSTs and their matching equipment. Finally, some potential applications and challenges faced by this emerging technique are discussed. Findings PSST is suitable for long-term and large-scale monitoring compared to conventional sensors because it gets rid of the limitation of battery and has relatively low cost. Also, the static information of objects stored in different PSSTs can be identified by a single reader without touch. Originality/value This paper provides a detailed and timely review of the rapidly growing research in PSST.


2018 ◽  
Vol 89 (4) ◽  
pp. 560-571 ◽  
Author(s):  
Xiaochen Chen ◽  
Leena Ukkonen ◽  
Johanna Virkki

Passive radio frequency identification-based technology is a convincing approach to the achievement of versatile energy- and cost-efficient wireless platforms for future wearable applications. By using two-part antenna structures, the antenna-electronics interconnections can remain non-stressed, which can significantly improve the reliability of the textile-embedded wireless components. In this article, we describe fabrication of two-part stretchable and non-stretchable passive ultra-high frequency radio frequency identification textile tags using electro-textile and embroidered antennas, and test their reliability when immersed as well as under cyclic strain. The results are compared to tags with traditional one-part dipole antennas fabricated from electro-textiles and by embroidery. Based on the results achieved, the initial read ranges of the two-part antenna tags, around 5 m, were only slightly shorter than those of the one-part antenna tags. In addition, the tag with two-part antennas can maintain high performance in a moist environment and during continuous stretching, unlike the one-part antenna tag where the antenna-integrated circuit attachment is under stress.


Author(s):  
Simrn Kaur Gill ◽  
Kathryn Cormican

This chapter introduces the concept of Ambient Intelligence (AmI) with regard to the enabling technologies and how they are combined to assist e-entrepreneurs. AmI is a new paradigm in the area of Information and Communication Technology (ICT). AmI allows for seamless interaction between the human and technology. The AmI system provides the human user with information and decision support tailored to their specific needs. To achieve seamless interaction between the human and technology requires the environment that surrounds the human to be embedded with technology in everyday objects. These technologies gather information that the AmI system uses to adapt its responses to the human user. The aim of the chapter is to provide a better understanding of the AmI process and knowledge of the AmI system and tools. To this end three of the enabling technologies are discussed: semantic web, multi-modal services, and radio frequency identification tags. These technologies are then examined within the AmI reference model. The reference model provides an understanding of how the technologies can be combined to achieve different AmI features for the human users. This toolkit can be used by a new venture in the area of e-entrepreneurship to provide AmI to service providers, new businesses and traditional industries.


2013 ◽  
Vol 10 (1) ◽  
pp. 30-39 ◽  
Author(s):  
Kirsi Saarinen ◽  
Laura Frisk

Radio frequency identification tags (RFID) with anisotropic conductive adhesive (ACA) joints are used in various applications where the environmental conditions may impair their reliability. Thus the effects of different environmental stresses on reliability need to be investigated. The purpose of this work was to study whether a relatively simple shear stress model can be utilized in reliability prediction of anisotropically conductive paste (ACP) joints in an accelerated humidity test on the basis of the information obtained from another humidity test. If modeling gives accurate results when studying reliability, the need for actual testing would decrease and thereby time and cost savings could be achieved. In this study, finite element models were made to calculate shear stresses in ACP joints induced by two different humidity tests. Additionally, experimental tests were performed and the results were compared with those of modeling. The test samples were RFID tags whose microchips were attached with ACP. A constant humidity test was used to study the effects of high humidity level and a humidity cycling test was used to examine the effects of constantly varying humidity. In the modeling it was observed that the selection of the stress-free temperature has a significant effect on the results. With three different stress-free temperatures, three different sets of results were obtained. Although the tags saturated in the extreme conditions of the humidity cycling test, according to modeling, the change in relative humidity level in the humidity cycling test did not increase the harshness of the test. However, the temperature change in the humidity cycling test increased the harshness.


In Vivo ◽  
2019 ◽  
Vol 34 (1) ◽  
pp. 233-238 ◽  
Author(s):  
UMAR WAZIR ◽  
SALIM TAYEH ◽  
NICHOLAS PERRY ◽  
MICHAEL MICHELL ◽  
ANMOL MALHOTRA ◽  
...  

2019 ◽  
Vol 18 (12) ◽  
pp. 2642-2646
Author(s):  
Weikang Chen ◽  
Zhenyi Niu ◽  
Mengyuan Li ◽  
Zhuo Li ◽  
Qian Xu ◽  
...  

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