• Korean Journal of Computational Design and Engineering
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• v.20 no.2
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• pp.159-170
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• 2015

Radio-Frequency Identification (RFID) or Near Field Communication (NFC) technology has many advantages over other visual interfaces since it does not require line-of-sight alignment, can identify multiple tags simultaneously, and does not destroy the integrity of original objects. In addition, smart devices such as smartphone and smartpad have NFC/RFID readers which can provide mobile and natural interactions with digital and physical contents. Augmented reality has an excellent visual interaction capability with digital contents in a real environment by embedding digital contents into the physical world. In this paper, we propose a new approach to digital content interactions using RFID/NFC-based tangible interfaces in augmented reality environments that utilize invisible interfaces in addition to marker-based visual interfaces. By combining the advantages of invisible and visual interfaces, more intuitive interactions with digital contents can be provided, which can remove the difficulty of using typical AR paddles that are widely used in AR interactions. In particular, a semantic AR ontology is defined to provide more convenient interactions. Through the semantic ontology-based inferencing, physical querying and filtering are effectively supported. We will show the effectiveness and advantage of the proposed approach by demonstrating implementation results.

• Journal of Internet Computing and Services
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• v.20 no.6
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• pp.129-135
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• 2019

Recently, studies have been conducted to improve the m-commerce process in the NFC-based mobile environment and the increase of the number of smart phones built in NFC. Since authentication is important in mobile electronic payment, FIDO(Fast IDentity Online) and 2 Factor electronic payment system are applied. In addition, block-chains using distributed raw materials have emerged as a representative technology of the fourth industry. In this study, for the mobile gallery auction of the traders using NFC embedded terminal (smartphone) in a small gallery auction in which an unspecified minority participates, password-based authentication and biometric authentication technology (fingerprint) were applied to record transaction details and ownership transfer of the auction participants in electronic payment. And, for the cost reduction and data integrity related to gallery auction, the private distributed director block chain was constructed and used. In addition, domestic and foreign cases applying block chain in the auction field were investigated and compared. In the future, the study will also study the implementation of block chain networks and smart contract and the integration of block chain and artificial intelligence to apply the proposed method.

• Journal of Korea Society of Digital Industry and Information Management
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• v.11 no.2
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• pp.23-35
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• 2015

When people stands near someone's mobile device, it can easily be seen by others. To rephrase this, attackers use human psychology to earn personal information or credit information or other. People are exposed by social engineering attacks. It is certain that we need more than just recommendation for the security to avoid social engineering attacks. This is why I proposed this paper. In this paper, I proposed an authentication technique using NFC and Hash function to stand against social engineering attack. Proposed technique result is showing that it could prevent shoulder surfing, touch event information, spyware attack using screen capture and smudge attack which relies on detecting the oily smudges left behind by user's fingers. Besides smart phone, IPad, Galaxy tab, Galaxy note and more mobile devices has released and releasing. And also, these mobile devices usage rate is increasing widely. We need to attend these matters and study in depth.

• KIISE Transactions on Computing Practices
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• v.21 no.4
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• pp.283-289
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• 2015

We propose a low cost attendance checking system using NFC (Near Field Communication) and show a case study of an actual operation of the system in a higher education institute. The system offers a direct attendance check service when a student touches NFC tag on a classroom desk with his/her own smartphone. Our service was first developed and operated in 2012, and then additional functions like massive real time processing were reinforced. In the fall semester, 58 courses use the service and 96% of the class attendance was checked with mobile devices. The only hardware requirement of the system was NFC tag on the classroom desk, which reduced hardware cost dramatically. However, it also minimized attendance checking time into 1 minute regardless of enrolled student number.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.7
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• pp.3487-3494
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• 2013

Diverse application service such as mobile payment, access control or smart poster have been provided by using smart devices with built-in Near Field Communication technology. Especially, a mobile payment system can provide convenience to its users, but it also can poses including data disclosure while transmitting. There are vulnerabilities while generating session keys used to encrypt data in transaction processes as proposed in KS X 6928, the standard for mobile payment system. Therefore, in this thesis, I analyzed weaknesses of session keys used to encrypt transaction data and proposed a more secure mobile payment system based on NFC to enhance security. The proposed system will provide security functionalities such as key freshness, mutual authentication and key confirmation.

• Journal of Korea Game Society
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• v.16 no.5
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• pp.57-68
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• 2016

Traditional market for arcade game is downsized due to limited offline services. This paper suggests O2O service which is a combination of NFC technology and traditional arcade game. O2O service available by installing NFC tag in the gaming machines and operating by smartphone. This allows convenient payment service along with continuity of gameplay. Furthermore applying ranking, statistics and replays will vitalize communities such as fan clubs and highlight local rankers into popular gaming stars. Offline gallery can be expanded to online via O2O service. Local stars and online gallery will lead arcade gaming platform to E sports. This paper covers servers and applications regarding O2O service in addition to their functions and expected outcome.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.1
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• pp.275-279
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• 2014

Due to a modern medical technology developement and the stability of social welfare policy, the current population of old person in Korea reaches to 550 million with the increasing elderly population rate(11.8%). But the living standard of elderly people does not meet to their needs of convenience on the proportion of the percentage of elderly people. Accordingly, this study mainly focuses on the research to find various advanced IT technologies to make elderly people more convient to use. Advanced IT industry makes it possible the convinence of elderly people using NFC, Wi-Fi, cardiac measurement technology.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.66 no.12
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• pp.1921-1936
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• 2017

Internet of Thing (IoT) and NFC (Near Field Communication) have got a good adaptable structure that it can be easily combined with any wireless network. Since IoT/NFC can be used to communicate wirelessly with all the transactions that can be done remotely without any physical connections. In this paper, we propose an enhanced secure IoT/NFC protocol based on LTE network that enhances the original security level provided by the LTE. Our approach is new in a sense that it covers LTE in contrast to old networks like GSM and 3G, which substantially treated in the literature. Moreover, both GSM and 3G have several drawbacks when they are combined with the NFC technology, which has potential weakness in confidentiality, integrity, and authentication. Hence our new approach will resolve the security of the new LTE system. We expect that our protocol will result in new secure applications for the smart phone markets.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.01a
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• pp.125-126
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• 2020

본 프로젝트는 고객과 택배기사가 배송과정에서 겪는 불편함을 해소하기 위해 App과 IoT센서를 연동하여 배송과정의 편의성을 제공하는 무인 택배함이다. 기존 택배함의 비밀번호를 사용하는 방식이 아닌 택배함에 부착되어있는 NFC 태그 스캔을 통하여 편리하게 물품을 배송 및 보관할 수 있도록 하였다. App은 택배기사와 고객으로 나뉘어 있으며 택배기사 App의 주요 기능은 운송장 번호를 스캔하여 물품을 보관할 여러 택배함 중 하나를 선택하여 해당 택배함의 도어락을 제어하는 기능이 있으며, 고객 App의 주요 기능은 NFC 스캔을 통해 물품이 보관된 택배함 또는 보관할 택배함을 선택하여 도어락을 제어하는 기능이 있다. 그 외에 택배기사 App은 배송 목록 조회, 내 정보 확인 등의 서비스를 제공하고 있으며, 고객 App은 택배 예약, 예약 조회 등의 서비스를 제공하고 있다. 택배함은 와이파이 모듈을 통해 서버와 통신할 수 있도록 하였으며, 충격센서와 Mp3 모듈을 사용하여 택배함에 충격을 가하면 경보음이 울리도록 설계하였다.

• Journal of Information Technology and Architecture
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• v.11 no.1
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• pp.45-52
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• 2014

Recently, more and more hospitals have become interested in the innovation of healthcare services and processes through IT convergence based on RFID, NFC, smart devices and so on. This paper presents a case of process innovation by implementing a smart health checkup system using these advanced information technologies. The existing inefficient health checkup process based on the paper chart and manual work has been innovated using the advanced information and communication technologies. The newly developed smart health checkup system has been used successfully in a tertiary university hospital named Samsung Medical Center since April 2013. The contributions of the system include improvement of service quality, enhancement of customer satisfaction, reduction in workload of staffs, improvement of work accuracy, and accordingly reinforcement of the competitiveness of the hospital.