• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.05a
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• pp.862-865
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• 2013

The smartphone digs deep into our lives, is changing our life. With increases the penetration of smart phones, it getting better performance. In recent years, tend to increase its utilization by an increase in the prevalence of smart phones equipped with NFC short-range wireless communication technology based on RFID in a number of areas, including e-cards, tagging. In this paper, we implement a system that can operate the system by traditional saddlecloth way of waiting waiting waiting standby system more efficient by applying NFC.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.3
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• pp.599-606
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• 2016

Many people feel uncomfortable when fitness center is crowded with people in all at the same time. So we propose exercise machines reservation system for resolving the problem that people feel uncomfortable in fitness center. In this paper, we design and implement the exercise machines reservation system that allows for users to reserve fitness equipments by using a NFC-based smart band. A user can reserve exercise machine using some reservation device. he or she will receive notifications through the smart band about when and which machine she or he will have to use. The user can do exercise with a recommended program, and can use any equipments conveniently even in a peak time because no one is waiting. Also, a manager can save cost through the efficient facility management and provide customized member management. Additionally, manager don't need to purchase other exercise machines or computers.

• International journal of advanced smart convergence
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• v.5 no.3
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• pp.66-71
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• 2016

Smart building gate security control system using smartphone integrated with near field communication (NFC) has become part of daily life usage these days. The technology change in replacing RF NFC device using visible light communication technology based approach growing faster in recent days. This paper propose a design and development of gate security control system using color code based user authentication ID generation as part of an intelligent access control system to control automatic door open and close. In this approach gate security access control use the recent visible light communication technology trends to transfer the user specific authentication code to door access control system using color code on smartphone screen. Using a camera in the door access control system (ACS), color codes on smartphone screens are detected and matched to the database of authenticated user to open the door automatically in gate security system. We measure the visual light communication technology efficiency as a part of the research and the experiments have revealed that more than 95% users authenticated correctly at the suggested experiment environment on gate security control system.

• Journal of Digital Convergence
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• v.4 no.1
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• pp.31-41
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• 2006

This article introduces developing trends of an 'Ubiquitous Interface' as an access method for use of various network resources, such as public wireless networks and un-licensed wireless networks in ubiquitous sensor network environments, without troublesome settings or operations by users. 'Ubiquitous Interface' is a relatively wide sense meaning not only physical interface of specified device or between processors, but anything method for access USN. These 'Ubiquitous Interface' able to provide seamless services that adapt autonomously to the user's movements and changes in the state of wireless resources. Recently, strongly recommended current technologies are RFID, NFC, Multi-mode mobile terminal, UMA mobile terminal and Wearable computer as a future ubiquitous interface. These technologies are have to have flexibility and multiple physical communication channels for seamless service hand over and serve easy connection at huge USN to user. Also, they have to must have flexible software structure. Finally, through the 'Ubiquitous Interface', we will be experience of seamless communication and realize a real liberty of communication.

• International Journal of Advanced Culture Technology
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• v.5 no.2
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• pp.98-105
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• 2017

Smartphones are fast growing in the IT market and are the most influential devices in our daily life. Smartphones are being studied for their use in body sensor networks with excellent processing power and wireless communication technology. In this paper, we propose a coordinator design that provides data collection, classification, and display using based on Android-smartphone in multiple sensor nodes. The coordinator collects data of sensor nodes that measure biological patterns using wireless communication technologies such as Bluetooth and NFC. The coordinator constructs a network using a multiple-level scheduling algorithm for efficient data collection at multiple sensor nodes. Also, to support different protocols between heterogeneous sensors, a data sheet recording wireless communication protocol information is used. The designed coordinator used Arduino to test the performance of multiple sensor node environments.

• The Journal of the Korea institute of electronic communication sciences
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• v.11 no.11
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• pp.1061-1068
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• 2016

A theme park runs various programs to provide users entertainments. Among the programs of the theme park, amusement facilities are the most favorite ones used by the users. However, Since the waiting time of the amusement facilities becomes increasing due to the large number of the users, the satisfaction of the users is diminished heavily, To solve this problem, we propose a reservation system for amusement facility using near field communication. In the proposed system, a server appends the user to the waiting queue of the amusement facility when an user contacts the reader of an amusement facility using NFC, If an clock approaches to the time that the user will exploit the amusement facility, the server notifies to the user. The implemented reservation system has the benefit to provide the user chances to exploit other programs during the waiting time.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.10a
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• pp.169-172
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• 2013

In this paper, we develop an application service of user authentication system using context awareness technology. The proposed security printer system service is applying 'NFC(Near Field Communication) technology', 'authentication system using communication with server, according to context awareness to application system. Our system extracts several context-awareness elements that happen through the user's printing with server communication. The proposed system property elements contain as print time, number of printing and name of document, etc. based on working memory operation as DB. This proposed system provide with context-awareness weight algorithm and analyzes the service which decides success or failure of user's printing. The develop app service is formed and applied when approved user who gets request. Approved user according to these context awareness tech will be provided with final service after authenticating again for the certain NFC card to reader. This results cab be contributed an authentication service based on context awareness weight algorithm and improved performance of management service in secure service applications.

• Journal of Korean Library and Information Science Society
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• v.37 no.2
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• pp.273-290
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• 2006

Recently, a digital divide has gotten worse in the information age. So LG Sangnam library developed the ubiquitous library for the improvement of information accessability of the blind. It utilizes a mobile phone applied with NFC (Near Field Communication) technology and automates a user's identification process and serve library services at anytime from anywhere. Users can use three access points of a web service, a mobile service and a telephone library service. As a conclusion of this paper. Several recommendations were proposed. For the development of ubiquitous library, various instruments should be considered to diversify user's access points and a usability test and analysis about user's environmental context should be done simultaneously.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.920-922
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• 2012

현재 많은 사람들이 스마트폰을 이용하고 있으며 스마트폰을 활용한 IT 기술들이 나날이 발전하고 있다. 또한 스마트폰을 이용 하여 사람들이 생활하는데 있어서 더욱 더 편리한 생활을 할 수 있도록 서비스 환경을 제공해준다. 그 중 대표적인 기술이 U-Health(Ubiquitous-Health) 기술 이며 U-Health 기술은 건강증진과 고령화 사회를 대비하기 위한 효과적인 문제해결 방안으로 주목받고 있다. U-Health 서비스는 스마트폰의 각종 센서를 활용하여 환자의 건강 상태를 체크하고 실시간으로 업데이트 하여 환자의 상태를 더욱 효율적으로 관리할 수 있다. 그러나 환자와 병원 서버 간에 데이터 단일화, 통신문제 등으로 인해서 아직까지는 많이 활용되고 있지 않는 현실이다. 또한 스마트폰으로 인한 환자의 개인신상 정보가 쉽게 노출될 수 있다는 단점이 있다. 따라서 본 논문에서는 NFC(Near Field Communication) 기반에서 환자와 병원간에 신뢰성 있는 데이터 전송을 위한 인증 시스템을 설계 하였다.

• Journal of Korea Multimedia Society
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• v.18 no.8
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• pp.968-979
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• 2015

In this paper, we study a vibration bell App which shows waiting sequence numbers by utilizing smartphones to solve an inconveniently long waiting time from ordering to getting foods in restaurants and coffee shops. Unlike existing independently developed hardware and software, the vibration bell App is developed to manage and integrate customer management service, POS service in shops, and group shop management services. The functions of the vibration bell App include two-way communications based on NFC- issuing waiting sequence numbers and electronic coupon, showing event information, and transferring user information. Furthermore, the user's personal information is minimized by recognizing the pre-existing information of the user's smartphone. Replacing the shop's vibration bell system with the vibration bell APP, the shops can reduce the cost of construction and maintenance by up to 1/10, compared to the cost of for existing vibration bell systems. Moreover, the customer's preference and current sales trend can be easily figured out. Thus, it will have a great effect on the future marketing strategies.