• Journal of Digital Contents Society
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• v.12 no.3
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• pp.263-270
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• 2011

The importance of effective delivery of information in the mobile web is increasing in Korea, due to the growing number of smart-phone users. In this study, I took a look at the characteristics of mobile devices and the mobile web, and after researching Korea's portal websites' mobile web designs, we figured out the users' preferences of mobile web designs through surveys and interviews. To provide compressed information on a small screen, it is ideal for significant contents to show up in the state that does not require scrolling. Users preferred compact and neat designs, and menus that were made with icons that are easy to touch with fingers, in the mobile web. When receiving delivered information, users preferred not only texts but texts that were provided together with photograph images. If usability evaluations and examination of preferences are achieved together, I think it will serve as a mobile web guideline that enables efficient delivery of information in the mobile web.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.769-774
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• 2009

디지털 기술의 발달과 급진적인 IT 산업의 발전은 환경적 인프라의 통합 및 구축을 촉진시켰으며, 이를 기반으로 한 모바일 기기들의 기술적 통합 (Technology Convergence)을 통하여 테크노매드 (Technomad)와 같은 이동성향을 가진 사용자들이 등장하기 시작하였다. 모바일 컨버전스 디바이스에 대한 사용자들의 니즈 (Needs)는 점차 증가추세를 보이고 있으나, 모바일 컨버전스 디바이스의 수요는 캐즘을 넘지 못하여 시장에서 성공적으로 진입하지 못하고 있는 실정이다. 모바일 컨버전스 디바이스를 통해서 얻을 수 있는 디지털 서비스의 구축이 미비한 부분도 있기는 하지만, 만족스럽지 못한 사용성이나, 기기의 도메인적 특성의 불명확함은 기술이나 성능의 수용 민감도가 높은 선각수용자 (Early Adopter)들의 사용에서만 그치게 하는 등의 한계점을 가지고 있다. 이에 본 연구는 모바일 컨버전스 디바이스의 개념과 도메인적 특성을 조사하고, 이를 통하여 사용 임계값 (Threshold)이 매스유저 (Mass User)가 모바일 컨버전스 디바이스를 사용하는데 진입장벽의 원인으로 작용하는 것을 발견하였다. 이러한 사용 임계값 (Threshold)이 실제 태스크 (Task)수행 시 미치는 영향을 파악하기 위하여 휴리스틱과 선각수용자 (Early Adopter)의 웹 기반 조사를 실시하였고, 사용 임계값 (Threshold)의 영향으로 제대로 사용이 이루어지지 않는 태스크 타입 (Task Type)에 따라 시간적, 물리적 사용 임계값 관리 (Threshold Management)가 필요함을 발견하였다. 이를 개선하기 위해 실제 사용자들의 사용을 FGI (Focused Group Interview) 및 Contextual Inquiry 등의 정성적인 사용자 조사방법을 실시하여, 사용자에게 모바일 컨버전스 디바이스를 통하여 만족스런 사용성 및 경험을 제공하기 위해서는 시간적, 물리적, 시야적 사용 임계값 관리 (Threshold Management)를 개선 해야 함을 밝혀내고 결론적으로 이에 대한 가이드라인을 도출하였다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.6
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• pp.729-735
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• 2020

A college campus tour is a great opportunity to promote the school environment, facilities and history to visitors or prospective students. Along with the population of smart phones and the advancement of information and communication technologies, many universities have recently provided mobile applications for campus tour, and some are starting to utilize augmented reality technology. However, most of the existing campus tour augmented reality systems tended to present a description-oriented campus tour guide. Their main focus is simply to provide information about the campus's main buildings or symbols. This study focuses on self-guided tours of the campus through games making new students and visitors to get familiar with the campus in a more natural and intuitive way. In this paper we present the design and development of a location-based mobile augmented reality treasure hunt game to enhance the user experience.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.10a
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• pp.164-166
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• 2021

In the ever-changing policy promotion environment, front-line public officials often have difficulties in public relations because they do not know what and how to do it precisely. Everybody says, "Promotion is important, publicity is a problem," however, the policies will inevitably become useless if citizens are not aware of them. Therefore, this study aims to examine Asan City's policy promotion strategy using social media, the core of mobile communication. In particular, mobile social media service is crucial because it is desirable to actively use it to improve its efficiency and strengthen public communication. In understanding and implementing policy promotion, a practical guide for policy promotion that public relations officials can refer to according to the situation is needed, not a formal manual. In addition, looking at how public institutions operate social media will be an opportunity to provide guidelines for using social media as a powerful means of promoting policies in public institutions in the future. We expect that social media will inform information more quickly and respond efficiently in an emergency information protection situation.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.39C no.1
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• pp.1-8
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• 2014

This paper proposed a method that prevents data leakage and modulation and detects an unauthorized device by using AP and mobile device. Most of existing method for detecting and preventing an unauthorized device are similar to type of Evil Twin. However, in previous studies can not resolve many security accident and have the problem to cope with effectively security accident on various network. In order to solve these problem, companies prepare security accident through the varies policy and guideline. but It is hard to prevent all security accident because it is consistently increasing everyday. This paper suggests technique of detecting and preventing an unauthorized device using Context Awareness and Mobile Device Management. Firstly, when mobile device go into internal network, server distinguish access permission and authorization of mobile device using acquiring the conetxt information of mobile device. By using this result, server applies the appropriate management technique to the mobile device for leakage and accident of internal network.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.27 no.4
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• pp.843-853
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• 2017

In the case of electronic payment, the obligation to use the certificate-based authentication was abolished. As Fin-tech service providers gain autonomy, various authentication methods are provided. SMS, ARS, PIN, Text-passwords, Fingerprints are popular authentication methods in the mobile Fin-tech services. In this study evaluate the usability and security of authentication methods in a unified mobile environment. We evaluate the usability through SUS and interview. Also we evaluate the security level of authentication methods through NIST guideline. At the result of the usability evaluation, Fingerprint authentication method had been determined as the highest usability, also Fingerprint authentication method had been determined as the safest authentication method by obtaining Security Level 4.

• Journal of Digital Convergence
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• v.16 no.3
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• pp.407-413
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• 2018

This study suggest the development direction of mobile environment by combining UX satisfaction index and UI guideline. In order to improve the satisfaction of viewers, in this study, we understand the mobile Internet broadcasting environment and application by combining UX and UI index. We present components which are suitable for internet broadcasting and calculate it on each broadcasting screen. Internet broadcasting application is for satisfaction of viewers. To make application which is satisfy viewer's needs, those advantages of applications should be combined.

• Journal of Digital Convergence
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• v.17 no.6
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• pp.355-363
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• 2019

This study is an analytical case study focusing on 'low-budget' mobile game development centered on both short-term development and small-scale collaboration. This study set up the assumption of four months as development period limited by three developers along with step by step productional documentation. In the previous study, we set up the responsibilities of the development personnels to analyze the effective process of the practical production. Furthermore, the study analyzed the usability verification of both advantages and disadvantages for conducting the quantitative survey with developer's feedbacks. The study is to provide the essential guideline for 'low-budget' development group with effective pipeline.

• Journal of the Korean Society for Library and Information Science
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• v.48 no.1
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• pp.415-439
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• 2014

The purpose of this study is to analyze mobile web accessibility of public libraries. To achieve this, accessibility checklists were driven from mobile web and application guidelines. The study also conducted automatic and manual evaluations. As results, the study found that text alternatives for resource image, main menu, image for text contents were mainly missing. In addition, focus for retrieval, operating system accessibility for retrieval, and id & password label, color difference for library calendar and seat reservation, brightness difference for main manu and resource display, and space between controls for retrieval were mainly missing. The study also suggested focal missing areas for main library services. It will be utilized as checklists for development of mobile services.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.11 no.4
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• pp.307-314
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• 2017

In this study, we propose a method to improve the guideline for accessibility of mobile applications based on the results of manual evaluation of 8 mobile online shopping applications which are widely used in Korea. 13 items of mobile online shopping application were found to have low compliance rate, and 5 items such as response time control were observed and there was no corresponding items. In the current mobile application accessibility guidelines, it is necessary to delete the check items that are not relevant or meaningless, and to provide additional logical items such as logical ordering and form creation, and to improve the accessibility of mobile applications, The government should make efforts to develop and disseminate the development guide, and to resolve the digital devides.