• Proceedings of the Korean Society of Computer Information Conference
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• 2023.07a
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• pp.255-256
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• 2023

본 논문은 실시간으로 지하철의 위치를 추적하고, 사용자에게 정확한 정보를 제공한다. 사용자는 모바일 푸시 알림을 통해 다가오는 정류장을 인식하고 놓치지 않고 하차할 수 있다. 웹 기반 솔루션으로 개발되어 사용자 친화적인 인터페이스를 제공하며, 승객들의 편의와 이동 시간 단축에 기여한다. 이 서비스는 실시간 지하철 위치, 알람 서비스, 모바일 푸시 알림, 웹 기반 솔루션, 사용자 경험을 포함한 다양한 기술과 요소들을 통합한다. 전반적으로, 이 서비스는 승객들에게 효율적이고 편리한 지하철 이용을 제공하여 승객 만족도를 높이고 이동 경험을 개선한다.

• TTA Journal
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• s.141
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• pp.53-56
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• 2012

• Proceedings of the Korean Society of Computer Information Conference
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• 2018.01a
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• pp.129-130
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• 2018

본 논문에서는 IoT 환경에서 응용프로토콜로 사용되는 MQTT 프로토콜을 활용한 위치 정보 푸시 알림 서비스 앱 개발 방법과 개발된 앱을 소개한다. MQTT 프로토콜은 Publish/Subscribe 전송 방식을 통해 정보를 제공하는 제공자와 정보를 필요로 하는 클라이언트 사이에 메시지를 전달한다. 본 논문에서는 이런 메시지 전송 방식을 활용한 MQTT 기반 위치 정보 전송이 가능한 앱 개발 방법을 제시한다. 제안하는 방법은 기존 앱에 비해 이동 시 자동으로 위치 정보 알림 서비스를 추가로 구현하였다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38B no.5
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• pp.344-354
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• 2013

In this paper, In order to solve the traffic of the SNS to be executed on smartphone, we propose the design of the SNS integrated gateway server. Also, we capture the payload size in a variety of methods to send the MQTT protocol and QoS level of MQTT protocol for communication between the client and the Gateway. And we present the results and analysis of packet loss and end-to-end delay. By using analysis proposed, we present the results of the integrated SNS Gateway push notification protocol design.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.560-561
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• 2018

The spread of smartphones is increasing the proportion of mobile shopping in the online shopping market. Most mobile shopping services are delivered through applications. However, personalization services are very important for user data collection and analysis. Therefore, in this paper, we implemented the product barcode recognition function and machine learning-based product image recognition function using smartphones camera to collect user data in mobile shopping environment. The implemented function and push notification services enabled the collection and analysis of user data and personalization services for online shopping platform applications.

• Journal of Internet Computing and Services
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• v.23 no.2
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• pp.19-28
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• 2022

In this paper, we propose an guidance system about closure using push notification of smart device. Restaurant operators can use the proposed application to schedule and modify the restaurant closures for a week from push notification and users can check the restaurant information and whether it is closed or not through the proposed application. The proposed method uses a server system to provide closed information, and the proposed application performs push notifications to the restaurant operator every morning to confirm the day's closed again. To verify the utility of the proposed system, we built a closure management application, user application, and server system to conduct experiments for restaurant closures guidance, resulting in 96% about checking opening hours. And we confirmed that the proposed method is better than the existing information service in comparison experiments. Thus, the proposed method will be a useful service system that could easily share closure information with restaurant operators and users.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.30 no.6
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• pp.1023-1030
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• 2020

Wearable devices, such as a smart watch and a wrist band, store owner's private information in the devices so that security in a high level is required. Applications developed by third parties in Tizen request for an access to designated services through the desktop bus (D-Bus). The D-Bus verifies application's privileges to grant the request for an access. We developed a fuzzing tool, so-called DAN (the D-bus ANalyzer), to detect errors in implementations for privilege verifications and access controls within Tizen's system services. The DAN has found a number of vulnerable services which granted accesses to unauthorized applications. We built a proof-of-concept application based on those findings to demonstrate a bypass in the privilege examination.

• Proceedings of the Korean Society of Computer Information Conference
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• 2017.01a
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• pp.141-142
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• 2017

기존의 상용화된 인체공학적 자세교정 의자나 의학적 치료 솔루션은 상대적으로 고가이며 사용자친화적인 접근성을 제공하기 어려웠다. 본 논문에서는 이 문제점을 해결하기 위해 소형 방석에 압력 센서를 접목하고 사용자에게 교정 상태를 상기시키는 시스템을 연구하고 이를 더 사용자 접근성이 좋은 방식을 고안하고자 한다. PushBullet[1] API를 사용하여 Non-Client Application 중심의 Multi-Device 기반 Push notification 기능을 연구하고 이와 기존의 바른 앉은 자세를 유지하는 자세교정 시스템을 결합한 방식을 제안한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.10
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• pp.6888-6894
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• 2015

Bluetooth 4.0 is the most appropriate technology for Internet of Things, which can be used to enhance and expand the existing areas and areas with a variety of applications. In this paper, an example of the services of the Internet of Things, we developed a tour guide system using the Bluetooth 4.0 and WiFi sensor technology. iBeacon-based push service have been limited to iOS smart phone series, non-iOS family and lower version of iOS 6 smart phones can not receive push-based services. This paper proposed in iBeacon and WiFi sensor is more than tourists, while maintaining the existing system (non-iOS smartphone users) can provide the service to you. Service tourist information as well as that can provide the advertising associated with the service. With 10 kinds of smart phones used in Korea was the experiment on the MAC information collected. This experiment is to track the behaviour of tourists in history can provide customized services can be based. Tourist destinations as well as amusement parks, resorts, etc. If you want to apply this system in a crowded place for user behavior information-gathering feature views over the a prevention of a missing child features such as notifications, risk, prevention is possible for a variety of applications.

• The Journal of the Korea institute of electronic communication sciences
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• v.11 no.2
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• pp.209-214
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• 2016

In an environment of IoT services, sensors to track things and human activities are included as an essential element and smart phone is actively used as a means of collecting and processing information from sensors. Especially, wireless communication and NFC provided by the smart phone are key technologies for exchanging information between participants of IoT service. In this paper, we propose and implement the smart attendance checking system based on BLE using a beacon for improving the quality of a university lecture by processing attendance information automatically. Proposed system uses the beacon sensor for being aware of attendance information and the smart phone for receiving and processing this information. The implemented system has the benefit to improve the lecture quality because a professor can minimize attendance checking time and spend a lot of time on the lecture.