• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.231-234
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• 2011

본 논문에서는 긴급통화만 가능하던 기존의 위기대처시스템들과 차별화를 두기 위해, 안드로이드에서 제공하는 시스템 중 하나인 미디어 부분을 이용하여 사용자의 음성을 입력받아 소리세기를 출력시켰다. 또한 GoogleAPI를 활용하여 현재위치를 찾아 긴급 메시지로 전송 가능한 시스템을 제공한다. 본 시스템은 사용자의 편리성과 효율성을 높이기 위하여, 단 1회 실행만으로도 연속적인 위기대처시스템의 인식과 주기적인 실시간 위치를 찾아 메시지 전송이 가능하다. 부가적으로 현재위치를 위도 경도로만 출력 되어 전송 되어지는 것이 아니라, 위도 경도의 값을 주소로 변환하여 출력 하므로서 보다 정확하고 편리하게 서비스를 이용할 수 있다.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.497-500
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• 2011

식당 이용에 있어서 평소 특정 시간대에 사람이 많이 몰려 혼잡한 상황을 완화시켜보고자 이 시스템을 창안하였다. 사용자가 음식예약, 음식나눔(SNS), 공지사항을 선택하면 각 선택메뉴에 맞는 서비스를 제공해 준다. 음식예약을 선택하면 원하는 만큼의 음식을 예약 할 수 있고, 사용자는 자신의 주문 내역을 확인할 수 있다. 이 어플리케이션을 사용하기 위해서는 회원으로 가입이 되어 있어야 하고, SNS의 경우 트위터API를 사용하여 연동 구현을 하였다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2020.11a
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• pp.361-363
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• 2020

기존의 지도 또는 길 찾기 기능을 사용 할 때 방향 정보를 직관적으로 제시해주는 네비게이션 구현을 목표로, 사용 지역을 캠퍼스 내로 국한시켜 증강현실을 이용한 네비게이션을 구현하였다. 본 애플리케이션 개발에는 Mapbox maps API, ARCore, Unity 3D Engine, Android studio를 사용하였다. 사용지역을 확대시켜 Mobile device 뿐만 아니라 자동차 앞 유리 디스플레이에 접목하여 보다 다양한 서비스 제공을 기대할 수 있다.

• Journal of Korea Entertainment Industry Association
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• v.15 no.4
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• pp.325-335
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• 2021

Chronic diseases have been increasing recently as the average life expectancy of humans has been extended, and this trend has caused problems such as the widespread demand for health and rehabilitation services and rising medical costs. In order to solve this problem, the community-based rehabilitation has been developed and strengthened in Korea and gradually promoted since 2019. It is important to secure access to clients who want to use services to revitalize community-based rehabilitation. So in this study, as part of the community-based rehabilitation, intends to devise smartphone applications designs and develop a prototype to secure access to community-based occupational therapy services based on occupation and activities. For Occupational Therapy Practice Framework (OTPF), International Classification of Functioning, Disability and Health (ICF), and Allen Diagnostic Module-2 (ADM-2) were used to devise and categorize occupation and activity based application content, and link OTPF, ICF, and ADM-2 through prior research analysis and expert meetings. The derived content was visualized through literature review and activity analysis, and was implemented to enable direct playback within the application using the YouTube API, and finally developed a prototype application. The Android Studio 3.5.2 for Windows 64-bit was used to build the application prototype. In further research, converging various digital technologies for user convenience and additionally researching community-based occupational therapy service providers opinions and service user satisfaction will improve accessibility to community-based occupational therapy services for clients who have difficulty occupational performance in the community.

• Journal of Korea Multimedia Society
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• v.23 no.8
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• pp.1099-1107
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• 2020

The need for customized services providing real-time subway information through mobile devices for the blind using subway as their primary transportation method is becoming more essential. Therefore, this study is aimed at developing a mobile service to provide real-time subway information by displaying with braille and utilizing Dot Watch. The process of real-time subway information guidance mobile service is as follows: the route confirmation stage, the ride waiting & judgment stage, the on-the-go stage, and lastly, the off-road phase & wrong path state. The service provides real-time appropriate information to the visually impaired people for each situation. It receives subway information through API provided by Seoul Metropolitan Government and ODSay API. The service is developed and coded with in Java using Android Studio, and the communicating method with Dot Watch was done using Bluetooth. The usability evaluation was conducted in terms of efficiency, effectiveness, and satisfaction. The evaluation methods mentioned above were carried out by testees, and feedback was given. They assessed that the information provided was useful but still unstable to use the system. It is expected that actual usability will increase if our study is supplemented using voice output function.

• Journal of the Korea Society of Computer and Information
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• v.28 no.3
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• pp.11-16
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• 2023

As techniques for indoor positioning, fingerprinting, indoor positioning method using trilateration, and utilizing information obtained from equipments by Wi-Fi/Bluetooth, etc are common and representative methods to specify the user's indoor position. However, in these methods, an indoor space should be provided with enough space to install a large number of equipment (AP, Beacon). In this paper, we propose a technique that can express the user's location within a building by simultaneously using the GPS signal and the signal transmitted from the beacon in a building structure where the conventional method cannot be applied, such as a narrow building. A shortest path search system was designed and implemented by applying the Dijkstra Algorithm, one of the most representative and efficient shortest path search algorithms for shortest path search. The proposed technique can be considered as one of the methods for measuring the user's indoor location considering the structural characteristics of a building in the future.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.22 no.4
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• pp.165-170
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• 2022

By reducing time spent outside, a shopping system was developed for middle-aged and elderly people who mainly use neighborhood marts and neighborhood mart managers. The main functions of this app are direct shopping and online shopping, and it was developed using QR code using Zxing library on Android and Kakao Map using Kakao API. In addition, it provides information such as payment statistics and bulletin board posts that members need through recycler view and graphs in an easy-to-read manner. Through this system, members can efficiently manage by reducing fatigue when using the mart through direct purchase using QR code and delivery through map, and reducing manpower wastage as a mart manager. Also, as a mart manager, more consumers will be able to sell more items.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.10a
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• pp.83-86
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• 2015

기존의 스트리트 뷰 이미지들은 일일이 사용자가 검색해야 하며 이미지 파일을 하나씩 클릭해서 넘겨 봐야한다는 점과 제공되는 스트리트 뷰 이미지들이 웹페이지 형태로만 제공된다는 불편함이 있었다. 이를 개선하고자 본 논문에서는 스트리트 뷰 이미지를 동영상으로 제공하여 쉽게 길을 찾아갈 수 있는 방법을 제안한다. 본 논문에서 제안하는 어플리케이션은 사용자가 출발지와 도착지를 입력하면 Google Maps APIs를 이용해 최단경로를 받아온다. 그 후 최단경로에 해당하는 좌표값에 해당하는 이미지를 Google Maps APIs URL을 이용하여 Android 내부 DB로 받아온다. 마지막으로 DB에 저장된 이미지를 동영상으로 변환하여 제공한다.

• KIPS Transactions on Software and Data Engineering
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• v.2 no.1
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• pp.71-80
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• 2013

Due to the increased use of mobile devices, there is a lot of discussion on mobile accessibility. Mobile accessibility means that everyone, who includes the disabled, the elderly people, can easily use the functions of mobile devices. In this paper, we presented and implemented a mobile interface using a speech I/O APIs to improve the accessibility. The proposed interfaces are implemented on Android platforms and they used speech recognition and text-to-speech APIs supported as built-in services. In addition, to facilitate the internet access for visually impaired or blind people, we also implemented the web browsing application (web reader).

• Journal of Korea Society of Digital Industry and Information Management
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• v.16 no.4
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• pp.43-53
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• 2020

There are three standards for FIDO1 authentication technology: Universal Second Factor (U2F), Universal Authentication Framework (UAF), and Client to Authenticator Protocols (CTAP). FIDO2 refers to the WebAuthn standard established by W3C for the creation and use of a certificate in a web application that complements the existing CTAP. In Korea, the FIDO certified market is dominated by UAF, which deals with standards for smartphone (Android, iOS) apps owned by the majority of the people. As the market requires certification through FIDO on PCs, FIDO Alliance and W3C established standards that can be certified on the platform-independent Web and published 『Web Authentication: An API for Accessing Public Key Credentials Level 1』 on March 4, 2019. Most PC do not contain biometrics, so they are not being utilized contrary to expectations. In this paper, we intend to present a model that allows login in PC environment through biometric recognition of smartphone and FIDO UAF authentication. We propose a model in which a user requests login from a PC and performs FIDO authentication on a smartphone, and authentication is completed on the PC without any other user's additional gesture.