• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.13 no.3
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• pp.177-181
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• 2013

As smart devices and OS with communication capabilities based latest NFC (Near Field Communication) have been spreaded, many applications with using existing RFID are being replaced to NFC. Smart NFC technology and existing services and devices can be easily combined convergence and advantage of smart phones, such as authentication and billing, medical care, the creation of a new paradigm of Network Communication are to be expected. By developing H/W, S/W of the Smart NFC Security Authenticator(SNSA), satisfying with wireless communication test results within accepted reference value, analyzing and testing the impact of topology, the signal performance of Daisy Chain Topology was much better than Star Topology's.

• Smart Media Journal
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• v.2 no.3
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• pp.10-16
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• 2013

NFC (Near Field Communication) was developed by SONY, NXP in 2002 and in 2003 respectively. It is one type of standard shore-range wireless communication system which operates in 13.56 MHz frequency band, within 10 cm distance and enables data transfer between devices with maximum rate of 424kbps. Various studies have been done on NFC technology and many handset manufacturers such as Apple, Google, Samsung Electronics Co., are trying to expand their market for new mobile services using this technology. This paper analyses the NFC standard technology, its trends and prospects in chapter II, which is followed by NFC systems and communication method in chapter III, and eventually NFC trends and future views is explained in chapter IV.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.7
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• pp.1639-1644
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• 2013

Recently, interest is rapidly increasing in short-range wireless communication such as NFC (Near Field Communication). In order to minimize the attendance time, we propose the attendance management system using the NFC tags attached in all of the desks in a classroom and NFC readers embedded in most of the smart-phones released in lately. The system consists of PC version web-application for professors and the android version app-application for students. And it provides the professors with more lecture time by saving the attendance check time. The contribution of this paper include that it proposes and develops the prototype of the attendance management system using NFC and proves that the system is applicable to the various kinds of educational organizations.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.25 no.9
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• pp.1271-1274
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• 2021

RF fingerprinting based on deep learning (DL) has gained interests as a means to improve the security of near field communication (NFC) by allowing identification of NFC tags based on unique physical characteristics. To achieve high accuracy in the identification of NFC tags, it is crucial to utilize a large number of training data, however it is hard to collect such dataset in practice. In this study, we have provided new methodology to generate RF waveform from NFC tags, i.e., data augmentation, based on a conditional generative adversarial network (CGAN). By using the RF waveform of NFC tags which is collected from the testbed with software defined radio (SDR), we have confirmed that the realistic RF waveform can be generated through our proposed scheme.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.05a
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• pp.568-570
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• 2013

NFC represents the 2nd generation of the proximity contact-less technology, which beyond the RFID, supports peer-to-peer communication, and enables consumer access to aggregated services, anytime, anywhere, with any type of consumer stationary and mobile devices. NFC is a short range device wireless technology designed to exchange data, initiate connections with other wireless networks and act as a secured smart key for access to services such as cashless payment, ticketing, on-line entertainment and access control. In this paper, the NFC services for social networking applications are studied, and the signal flow of SNS application based on NFC P2P for smart devices and server model is proposed.

• The Journal of the Korea institute of electronic communication sciences
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• v.7 no.4
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• pp.805-810
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• 2012

Recently, applications range of NFC is widening by popularization of smartphone. Expansion of NFC means generalization of electronic payments systems. So security of NFC is very important. AES-128 is safe cryptographic technique for NFC now in use. But, the more range of applications increases, the more safe cryptographic techniques are necessary. In this paper, we propose the safe method is unaffected by the development of NFC. Proposed A-NFC scheme, adding the authentication of asymmetric cryptographic, is easy to apply for NFC and NFC-USIM chipsets, and it can adapt to the general NFC environment.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.36-39
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• 2012

IT산업이 발전함에 따라 Bluetooth, ZigBee, RFID(Radio Frequency Identification)와 같은 근거리 무선통신 시스템에 대한 연구가 활발히 진행되고 있으며 다양한 분야에 활용되고 있다. 그 중 NFC(Near Field Communication)의 연구가 활발히 진행되고 있으며, NFC 태그와 함께 사용할 경우 활용성은 더욱 증대된다. 이와 관련하여 현재 다양한 NFC 태그관련 애플리케이션이 존재한다. 하지만 기존의 NFC 태그 애플리케이션은 단일 기능을 중심으로 제공하고, 여러 가지 기능을 이용하기 위해서는 여러 개의 NFC 태그가 필요하다는 단점이 있다. 이 점을 개선하고자 본 논문에서는 단일 NFC 태그로 다양한 기능을 제공하는 애플리케이션을 구현한다. 기능들로는 Text입력과 에어플레인 모드, Wi-Fi, Bluetooth, 무음모드, 알람, 알람설정, 사용자 지정 애플리케이션 선택 및 활성이 있다. 이러한 기능들은 사용자의 상황에 맞게 태그에 입력 시킬 수 있으며, 결과적으로 기존의 단일 기능을 제공하는 애플리케이션보다 개선됨 점을 나타낸다.

• Journal of Korea Multimedia Society
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• v.19 no.2
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• pp.317-324
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• 2016

This paper proposes a message transfer application using smartphone with NFC(Near Field Communication) and GCM(Goolge Cloud Messaging) technology for prevention of personal information leakage. In implementing for the proposed system, we design a NFC-based vehicle status alerts service which make it possible to communicate with smartpone message without phone-number between a car driver and an unspecified person. The application provides message communication mechanism without exposing the real phone number, using the NFC tag written with the driver's smartphone device ID and GCM push messages. Through the evaluation result of the actual implemented application, the proposed system can be efficient technology in protection for leakage of personal information such as personal phone- number in daily life.

• Journal of Digital Convergence
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• v.12 no.8
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• pp.303-308
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• 2014

In this paper, a ferrite sheet at the back of the smartphone by type, pattern, stars, the thickness of the recognition distance by attaching the NFC optimum ferrite sheet simulation was designed. Characterized by patterns rather than the Full-type I-type communication distance of about 1 ~ 2mm more extended. Ferrite sheet metal by applying the NFC antenna is effective in improving the characteristics were confirmed. In the case of the pattern C, the permeability is 140, a thickness of 0.1mm, Full-type ferrite sheet when applied to NFC communication distance than normal electromagnetic absorber is increased from 45 to 59 was confirmed that.

• Journal of Korea Multimedia Society
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• v.18 no.12
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• pp.1547-1554
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• 2015

Because there are numerous near field communication (NFC) technical standards and each standard has an independent communication protocol, an NFC software for controlling the protocols are significantly complicated. Especially, the anticollision algorithm for establishing the initial communication connection is classified into bit-oriented or time slot method according to the technical standards. Moreover, the anticollision algorithm is generally manipulated in software because of its complexity. In addition, since one host processor is shared by multiple modems in a connectivity SoC, embedding several communication modems with an NFC modem, the spare computing resources can be utilized for other modems by reducing the software cost to control the NFC modem. In this paper, we propose new design methods of the NFC modem for supporting anticollision, framing and bit rate detection in the hardware to reduce the software overhead. Therefore, the utilization of the NFC technology is enhanced in the connectivity SoC by minimizing the cost of software.