• The Journal of the Korea institute of electronic communication sciences
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• v.15 no.6
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• pp.1031-1036
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• 2020

Untact marketing emerged as one of the top 10 marketing in 2018. Since then, the scale of the mobile payment market has expanded, and the ratio of payment through mobile is melting into life even offline. Various mobile apps such as Samsung Pay and Smart Order are already popular systems, and various other mobile payment systems are increasing. For such mobile payments, this paper aims to comprehensively design a general-purpose untouched offline payment system by designing a mobile payment system that applies a short-range wireless communication method along with a study on the currently available mobile payment-linked API. We propose an offline payment system with an untouch method to prevent the spread of infectious diseases and contribute to a healthy society by solving the problem and minimizing contact with others in the current situation like the Corona 19 Incident.

• The Journal of the Korea Contents Association
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• v.19 no.5
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• pp.194-204
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• 2019

The mobile payment app market has been expanding recently. However, the usage rate of mobile payment apps is not meeting service providers' expectations due to concerns about security and privacy. This study investigated how personal predisposition and how the security signals of the payment app affect users' perceived privacy and security risks, and how these factors ultimately affect the trust of mobile payment apps. The results showed that privacy concerns increase the risk of perceived personal information leaks and reduce perceived mobile system security, while familiarity, perceived reputation, and assurance seal reduce the risk of perceived personal information leaks and increase perceived mobile system security. Finally, it revealed that the reduced risk of perceived personal information leaks and the increased security of mobile systems had a positive impact on the reliability of mobile payment apps.

• Journal of Convergence Society for SMB
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• v.5 no.2
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• pp.7-13
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• 2015

Recently, payment methods using smartphone are diverse with the increased usage of smartphone. Especially, new features of mobile payment service are required in the situation to provide more services than mobile service of non-financial corporations. This paper proposed response and plan of current banks for mobile payments of non-financial corporations. Proposed method analyzes response and plan of the existing countermeasures of banks due to the spread of mobile devices, the development of FinTech, and the diversification of mobile payment in recent years. And, proposed paper additionally suggests the countermeasures of the financial sector for the reduction of fee income caused by the non-financial payment services. Also, this paper analyzes the mobile payment field and the method of non-financial corporations, which is the threat to the existing banks, and describes the countermeasure.

• Journal of Digital Convergence
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• v.19 no.9
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• pp.271-276
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• 2021

This study is about finding factors affecting user experience in China's mobile payment. The recen development of 5G networks and the spread of phones provide the basis for the development of mobile payment, and the development of mobile payment is showing a rapid upward trend. Because of the simplicity and mobility, it is appealing to people, especially young people. Therefore, this study conducted a survey on mobile payment users in 20s and 30s and confirmed the factors affecting the user experience through regression analysis. Unlike previous studies on mobile payment technology, this study focused on user experience and identified factors affecting user experience, so it is expected to be helpful in the development of mobile payment in China.

• Journal of Korea Multimedia Society
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• v.13 no.11
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• pp.1687-1697
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• 2010

The USIM-based AKA authentication process is essential to a mobile payment system on smart phone environment. In this paper a payment protocol and an AKA module are designed for mobile payment system which is suitable for openness smart phone environment. The payment protocol designs the cross authentication among components of the mobile payment system to improve the reliability of the components. The AKA module of mobile payment system based on 3GPP-AKA protocol prevents the exposure of IMSI by creating the SSK(Shared Secure Key) through advance registration and solves the SQN(SeQuence Number) synchronization problem by using timestamp. Also, by using the SSK instead of authentication vector between SN and authentication center, the existing bandwidth $(688{\times}N){\times}R$ bit between them is reduced to $320{\times}R$ bit or $368{\times}R$ bit. It creates CK and IK which are message encryption key by using OT-SSK(One-Time SSK) between MS and SN. In addition, creating the new OT-SSK whenever MS is connected to SN, it prevents the data replay attack.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.26 no.6
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• pp.1527-1537
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• 2016

As increasing of smartphone penetration over the world, various mobile payment services have been emerged and fraud transactions have drastically increased. Although many financial companies have deployed security solutions to detect fraud transactions in on/off-line environment, mobile payment services still lack fraud detection solutions and researches. The mobile payment is mainly comprised of micro-payments and payment environment is different from other payments, so mobile-specialized fraud detection is needed. In this paper, we propose a FDS (Fraud Detection System) based on data mining for mobile payment services. The method of this paper is applied to the real data provided by a PG (Payment Gateway) company in Korea. The proposed FDS consists of two phases; (1) the first phase is focused on classifying transactions at high speed (2) the second is designed to detect abnormal transactions with high accuracy. We could detect 13 transactions per second with 93% accuracy rate.

• Proceedings of the Korea Information Processing Society Conference
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• 2014.11a
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• pp.507-509
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• 2014

최근 NFC를 이용한 모바일 결제 서비스가 국내 외에서 널리 주목받음에 따라 모바일 결제 시장이 더욱 활성화 될 것으로 전망되고 있다. 이에 따라 지식경제부 기술표준원에서는 2012년 3월 모바일 지급결제를 위한 표준으로 KS X 6928을 제정하였으며, 관련 학계 및 업체들은 안전하고 효율적인 결제 서비스 환경을 위한 다양한 연구를 진행하고 있다. 본 연구에서는 기존 모바일 지급결제 표준이 갖는 문제점을 제시하고 이를 해결하기 위해 기존에 제공되는 표준 기술과 NFC의 Signature RTD를 활용하여 안전한 거래 인증 기법을 제안한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.10a
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• pp.661-663
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• 2015

인터넷의 모바일화에 따른 스마트폰 이용자의 증가는 모바일 기반의 다양한 서비스가 개발 보급되는 환경을 제공하였다. 그 중에서도 모바일 폰을 사용한 결제 서비스는 결제의 편리성이라는 이점으로 활성화 되고 있지만, 편리한 만큼 보안의 취약성을 가질 수 있다는 단점이 있다. 특히, 초기에 모바일 기반 소액결제 서비스가 활성화 되면서, 스미싱으로 인한 이용자 피해가 사회문제로 대두되면서 이를 해결하기 위한 대안들이 제시되었다. 전자금융거래로 인한 금전적 피해는 카드사에서 이미 진행되고 있었으며, 최근에는 이용자의 피해를 최소화하기 위해서 은행, 증권사에도 이상금융거래 탐지 시스템(FDS) 구축을 규제하고 있다. 이에, 논문에서는 모바일 소액결제 서비스 환경에서의 이상금융거래 탐지를 위한 시스템 개발에 대한 연구 방향에 대해서 제시하고자 한다.

• KIPS Transactions on Computer and Communication Systems
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• v.2 no.3
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• pp.133-142
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• 2013

Recently, smart devices for various services have been developed using converged telecommunications, and the markets for near field communication (NFC) mobile services is expected to grow rapidly. In particular, the realization of mobile NFC payment services is expected to go commercial, and it is widely attracting attention both on a domestic and global level. However, this realization would increase privacy infringement, as personal information is extensively used in the NFC technology. One example of such privacy infringement would be the case of the Google wallet service. In this paper, we propose an mutual authentication scheme based on NTRU for secure channel in OTA and an zero-knowledge proof scheme NTRU based on for protecting user information in NFC mobile payment systems without directly using private financial information of the user.

• Proceedings of the Korea Multimedia Society Conference
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• 2003.05b
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• pp.667-670
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• 2003

M-Commerce에서 안전한 데이터 서비스를 위해서는 정보보호 및 무선 결제 시스템에 대한 연구가 반드시 선결되어야 한다. 현재 무선 결제 서비스는 이동통신사를 중심으로 한 소액결제 서비스가 주를 이루고 있으며, 신용카드 기반의 결제 서비스는 고액결제가 가능하지만 무선 결제 시스템에 취약한 문제점을 가지고 있다. 본 논문에서는 지불 승인 절차에 병목 현상을 개선하기 위해 일회성 패스워드 시스템을 적용한 PDA 기반 모바일 고액결제 시스템을 제안한다.