• Journal of the Korea Convergence Society
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• v.8 no.11
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• pp.263-269
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• 2017

Credit card holders are showing a higher level of psychology to show their identity beyond the means of payment. The purpose of this study is to investigate which design factors affect the 30th and 40th generation housewives when issuing credit cards. A total of 200 people in the 30s and 40s housewives who live in Seoul and the metropolitan area were selected from among the customers who use the credit card, and the effect of the design factors of the domestic credit card on the selection of the credit card, Based on previous studies, questionnaires were prepared and surveyed. As a result of the survey, it was found that the color design of the credit card design element was the achromatic system and the main image was the simple design which only used the color without emphasizing the image or the logo, and then the character type was preferred. I prefer not to have a card decoration, and I have found that a metal-like card material is the most preferred. Through this, I would like to suggest directions for the design development for 30 and 40 housewives in credit card companies.

• The KIPS Transactions:PartA
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• v.9A no.4
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• pp.429-440
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• 2002

Smartcard is a kind of computing device with it's own processor and memory Thus, the international money market is going to accomodate the use of smartcards instead of traditional magnetic cards for the future money market. EMV is a standard protocol for smartcards, proposed by Europay, Mastercard, and Visa, which are three famous international settlement organizations. This paper presents the implementation of EMV specifications for the smartcard terminals for supporting various application programs. This paper shows that the implemented EMV terminal passes the international approval tests.

• Electronics and Telecommunications Trends
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• v.19 no.2 s.86
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• pp.111-116
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• 2004

무선 주파수 인식(RFID) 기술은 바코드 시스템과 마그네틱 카드 시스템이 우리 생활에 밀접하게 이용되고 있으나 생산 방식의 변화, 소비자 의식의 변화, 문화 및 기술의 진보, 바코드와 마그네틱 카드의 단점 해소 요구에 의해 개발된 시스템이다. 즉, 무선으로 사람, 물건, 동물 등을 인식, 추적, 식별할 수 있는 기술이다. RFID 카드는 다른 접촉식 카드와는 달리 이용자가 카드를 리더에 삽입하는 시간이 필요치 않으며 기계적인 접촉이 없기 때문에 마찰이나 손상이 없고 오염이나 환경의 영향이 적은 것이 특징이다. RFID 시스템은 공장 자동화, 교통 분야, 의료 분야, 레저나 시설에서도 많이 응용되어 새로운 수익을 창출할 수 있는 기술이 될 것으로 사료된다.

• Electronics and Telecommunications Trends
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• v.17 no.5 s.77
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• pp.102-106
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• 2002

현재 IC 카드는 통신, 금융, 교통 등의 여러 응용 서비스에서 널리 사용되고 있는데, 계속적인 하드웨어 기술의 발전으로 인한 메모리 증가, CPU 성능 향상과 통합된 정보 가전을 위한 다양한 형태의 네트워크 연결 인터페이스 구축 노력이 다중 응용 프로그램 사용 요구 및 개방형 운영체제(open-platform operating system)와 맞물려 도약적인 기술 발전을 이루고 있다. 본 고에서는 널리 사용되고 있으며 향후 시장성이 가장 클 것으로 예측되는 자바 카드 플랫폼 탑재 IC 카드의 기술 현황을 H/W 및 S/W 측면에서 살펴보고, 자바 카드 기술의 발전 동향을 조망하고자 한다.

• Proceedings of the Korean Society of Applied Pharmacology
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• 1995.04a
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• pp.126-126
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• 1995

본 연구는 중금속에 의한 생체내 독성기전을 연구하고자 흰쥐간의 상층액에서 카드뮴과 잘 결합하는 HMWP들을 분리, 정재하고 나아가 생화학적 특성을 밝히고 이단백질이 카드뮴에 의해 생성되는 것인지 아니면 간의 기존 단백질인지를 밝히고자 함을 연구의 목적으로 하였다. CdCl %2 (3mg/kg body wt.)을 3일간 ip injection시킨 후 흰쥐의 간을 적출하고 균질화하여 원심분리한 crude extract를 직접 Sephacryl S-100에 흡착시켜 10mM phosphate buffer(pH 7.0)으로 용출시켰다. 용출된 fraction tube를 UV spectrometer로 흡광도를 측정하고 atomic absorption spectrophotometer로 카드뮴량을 측정하여 카드뮴량이 높은 분획을 모아서 ion exchange column chromatography(DEAE-Sepharose)에 흡착시켜 염농도 구배로 chromatography를 실시하고, 음이온 교환수지에서 흡착되지 않고 용출된 분획을 ultrafiltration으로 농축시킨 후 S-Sepharose에 흡착시켜 염농도 구배로 chromatography를 실시한 결과 두 종류의 카드뮴 결합 단백질(Cd-BP)를 분리, 정제하였다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2023.01a
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• pp.53-54
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• 2023

본 논문에서는 키넥트 센서 기반의 아동 기억력 향상 애플리케이션을 설계하고 구현한다. 이 애플리케이션은 유아층의 기억력을 향상시키고 팔 동작으로 소근육 발달에 도움을 주는 카드 짝 맞추기 게임의 기능을 구현한다. 카드 짝 맞추기 게임은 키넥트 센서에서 인식한 사용자의 스켈레톤, 뎁스스트림, 조인트, 음성 정보를 활용하여 플레이어의 오른손을 인식하여 카드를 뒤집고 짝이 맞는 경우는 그대로 두고 짝이 맞지 않는 경우에는 다시 뒤집는다. 사용자는 카드의 위치와 그림을 기억하며 16장의 카드를 모두 맞출때까지 계속 진행한다. 이 게임은 유아들이 재미있게 게임을 즐기면서 기억력을 향상시킬 수 있다.

• Information Systems Review
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• v.10 no.3
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• pp.89-109
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• 2008

Korean card firms suffered harsh setbacks due to high credit defaults in 2002 and 2003, after issuing cards recklessly. Their key principle is changed to grow without damaging profitability and financial soundness. However, competition in the credit card market is heating up rapidly. Bank-affiliated card firms, having stronger sales networks and more capital than independent issuers, have increased their investments in card affiliates in a bid to develop new cash cows. Moreover, newly emerging independent card firms have waged fiercer campaigns to raise their credit card market share. In order to overcome these business conditions, S-card has settled on a strategy that focuses on stepping up marketing aimed at increasing charge card spending rather than credit card loans or cash lending services. Accordingly, S-card reformed the current business classification system of merchants, which was out-of-dated and originally built for the purpose of deciding merchant service fees only. They also drove customer segmentation planning to deliver the right customers to the right merchants. In this paper, we emphasize the problems of business classification systems of merchants with which most credit card firms have faced, and the need for reforming them not only to provide customer-tailored services but also to raise their business promotion excellence by reviewing S-card's process of customer segmentation.

• Journal of Korea Multimedia Society
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• v.14 no.1
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• pp.103-111
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• 2011

Legacy Java card which adapts a Java platform loads and executes an application when electronics power is provided. However, recently the most Java cards are embedded into a mobile terminal as USIM cards, therefore the power is continually provided for the smart cards. In this case, operation of a Java card system needs to consider its operating system to be advanced in memory management, object management and transaction mechanism. In this paper, we present a high performance Java Card system which is able to have efficient installation, loading and execution of application by applying a new memory management of the smart card that has safe power system.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.25 no.5
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• pp.1175-1186
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• 2015

Financial fraud has been increasing along with credit card usage. Magnetic stripe cards have vulnerabilities in that credit card information is exposed in plaintext and cardholder verification is untrustworthy. So they have been replaced by a smart card scheme to provide enhanced security. Furthermore, the FinTech that combines the IT with Financial product is being prevalent. For that reason, many mobile device based payment schemes have been proposed for card present transaction. In this paper, we propose a virtual credit card number payment scheme based on public key system for efficient authentication in card present transaction. Our proposed scheme is able to authenticate efficiently in card present transaction by pre-registering virtual credit card number based on cardholder's public key without PKI. And we compare and analyze our proposed scheme with EMV.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.41 no.4
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• pp.103-112
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• 2004

This paper suggests the way to realize smart card security system by using handwritten signature instead of a password which is traditionally used for user authentication. Because of the familiarity of signature we don't need to try to remember the password and signature is difficult to be used by guess or illegal forced situation. The feature data of handwritten signature is large, so we designed COS which is consist of special commands for processing user's handwritten signature data, user authentication, and basic commands based on ISO 7816-3. Also protocol among user, smart card terminal and DB server is designed. In registration process, the feature data of user signature is saved in both a DB server and a smart card. User authentication is processed by comparing the user signature and the saved feature data in a smart card and in a DB server. And the authentication result and hash value of signature data in DB server are transferred to smart card. During this process the authentication between DB server and user is finished. The proposed security system has more higher level of security in user authentication of smart card and it will Provide safer and more convenient security services.