Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services最新文献_第5页

Poster: Detection of Cyberbullying in a Mobile Social Network: Systems Issues 海报:移动社交网络中网络欺凌的检测:系统问题

Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services Pub Date : 2015-05-18 DOI: 10.1145/2742647.2745908

Homa Hosseinmardi, S. Mattson, R. Rafiq, Richard O. Han, Q. Lv, Shivakant Mishra

引用次数: 5

Energy Efficient WiFi Display 节能WiFi显示屏

Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services Pub Date : 2015-05-18 DOI: 10.1145/2742647.2742654

Chi Zhang, Xinyu Zhang, Ranveer Chandra

引用次数: 13

Poster: A Hybrid Indoor Audio Localization System 海报:混合室内音频定位系统

Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services Pub Date : 2015-05-18 DOI: 10.1145/2742647.2745910

Lito Kriara, Giorgio Corbellini, V. Vukadinovic, Ruben Kaelin, R. Frigg, S. Mangold

{"title":"Poster: A Hybrid Indoor Audio Localization System","authors":"Lito Kriara, Giorgio Corbellini, V. Vukadinovic, Ruben Kaelin, R. Frigg, S. Mangold","doi":"10.1145/2742647.2745910","DOIUrl":"https://doi.org/10.1145/2742647.2745910","url":null,"abstract":"User localization with mobile devices remains a challenging research problem if the environment or required accuracy prevent the use of satellite navigation (GPS). In this paper, we present a hybrid system that performs real time localization on a mobile device, using the audio signals emitted by nearby loudspeakers. Such an approach is useful in controlled environments with background music and sound, such as shopping centers, malls, or entertainment theme parks (Fig. 1). Two known audio identification methods are used in combination: (1) watermarking [1] with hidden location markers and (2) fingerprinting [2] with sound matches in a database. Based on the performance of the two methods in terms of accuracy and energy consumption, a particle filter-based hybrid combination [3] of CRC-based watermarking and fingerprinting is proposed. Our localization scheme runs as stand-alone mobile application and enables a user to identify the current location. It also respects the user’s privacy as it runs locally on a mobile device. We present the testbed implementation and experimental evaluation in an indoor environment with respect to the presence of noise, interference, user mobility, and power consumption. This implementation is the first step towards fine-grained localization using sound in the future.","PeriodicalId":191203,"journal":{"name":"Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133721965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Tracking Keystrokes Using Wireless Signals 使用无线信号跟踪击键

Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services Pub Date : 2015-05-18 DOI: 10.1145/2742647.2742673

Bo Chen, Vivek Yenamandra, K. Srinivasan

{"title":"Tracking Keystrokes Using Wireless Signals","authors":"Bo Chen, Vivek Yenamandra, K. Srinivasan","doi":"10.1145/2742647.2742673","DOIUrl":"https://doi.org/10.1145/2742647.2742673","url":null,"abstract":"We implement a passive remote keystroke detection mechanism using only changes in the wireless channel. The detection algorithm does not require the user to wear any active devices nor does it require a change in the user's wireless transmission technique. The receiver system is implemented with five antennas. We cancel the signals received on multiple antennas. The key insight to realizing a fine-grained localization system is to exploit the extremely high sensitivity of cancellation performance (interference cancellation in full-duplex for example) to exact amplitude and phase matching. The receiver design introduces a delay mismatch between the received signal streams to guarantee imperfect cancellation across the transmission bandwidth except at one in-band frequency resulting in a trough in the cancellation spectrum. We detect keystrokes by forming an array of observed trough frequency across different antenna pairs. We implement our receiver system on the NI-based SDR platform. With full-training the receiver detects a keystroke within one key offset with an accuracy of 91.8%. With a short ≈ 10 character training input, this accuracy drops to 85%.","PeriodicalId":191203,"journal":{"name":"Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115722007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 76

Real-Time Screen-Camera Communication Behind Any Scene 任何场景背后的实时屏幕摄像头通信

Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services Pub Date : 2015-05-18 DOI: 10.1145/2742647.2742667

Tianxing Li, Chuankai An, Xinran Xiao, A. Campbell, Xia Zhou

引用次数: 104

Poster: Context-Triggered Mobile Network Measurement 海报:情境触发移动网络测量

Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services Pub Date : 2015-05-18 DOI: 10.1145/2742647.2745905

Shichang Xu, Ashkan Nikravesh, Hongyi Yao, D. Choffnes, Z. Morley Mao

{"title":"Poster: Context-Triggered Mobile Network Measurement","authors":"Shichang Xu, Ashkan Nikravesh, Hongyi Yao, D. Choffnes, Z. Morley Mao","doi":"10.1145/2742647.2745905","DOIUrl":"https://doi.org/10.1145/2742647.2745905","url":null,"abstract":"While the availability and accessibility of cellular network connectivity have improved in recent years, our ability to diagnose and debug network problems in this environment has not. One key challenge is that many of the network problems occur near the edge of the network where only mobile devices can perceive them, but network and battery resources to conduct measurements from these mobile devices are scarce. Traditional network measurement approaches that use continuous, periodic, or random measurements are either infeasible or ineffective in this environment. In this work, we propose an alternative approach: triggering measurements based on relevant device context such as signal strength and historical performance data, which can inform decisions for when to measure current network performance. This context can be collected locally on the device as well as aggregated at a global scale to schedule measurement based on data collected from multiple devices. By carefully selecting when to conduct a measurement, and using prediction to improve the likelihood that triggered measurements will succeed, we can more reliably measure important network phenomena with less overhead. Using Mobilyzer [3] as a platform for evaluation, we propose an architecture that is sufficiently general to support a wide range of triggered measurement experiments. We demonstrate the use of this framework for measurements on mobile platforms that are traditionally difficult to capture, e.g., handoff measurement. Further, we can use the global scheduler to predict which devices will likely satisfy the preconditions for the triggered measurement to improve the measurement success rate. Compared to previous work [2, 1, 4], ours is the first to propose a general framework to enable context-triggered mobile measurement, leveraging both local and global visibility into context while ensuring low overhead.","PeriodicalId":191203,"journal":{"name":"Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126597816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Demo: Turning a Mobile Device into a Mouse in the Air 演示:在空中将移动设备变成鼠标

Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services Pub Date : 2015-05-18 DOI: 10.1145/2742647.2745931

Sangki Yun, Yi-Chao Chen, Wenguang Mao, L. Qiu

{"title":"Demo: Turning a Mobile Device into a Mouse in the Air","authors":"Sangki Yun, Yi-Chao Chen, Wenguang Mao, L. Qiu","doi":"10.1145/2742647.2745931","DOIUrl":"https://doi.org/10.1145/2742647.2745931","url":null,"abstract":"Motivation: Amouse is widely popular for controlling the graphic user interface due to its ease of use. Its attraction will soon penetrate well beyond just computers. There already have been mice designed for game consoles and smart TVs. A smart TV allows a user to run popular computer programs and smartphone applications. More and more devices in the future, such as Google Glasses, baby monitors, and new generation of home appliances, will all desire mouse functionalities, which allow users to choose from a wide variety of options and easily click on different parts of the view. However, a traditional mouse, which requires a flat and smooth surface to operate, cannot satisfy many new usage scenarios. A user wants to interact with the remote device on the move. For example, a speaker wants to freely move around and click on different objects in his slide; a smart TV user wants to watch TV in any part of a room; a Google Glass user wants to query about objects while touring around. Wouldn’t it be nice if a user can simply turn his smartphone or smart watch into a mouse by moving it in the air?","PeriodicalId":191203,"journal":{"name":"Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133596961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Demo: Using Wearables to Learn from Human Dynamics 演示:使用可穿戴设备学习人类动态

Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services Pub Date : 2015-05-18 DOI: 10.1145/2742647.2745932

S. Faye, Raphaël Frank

引用次数: 4

RollingLight: Enabling Line-of-Sight Light-to-Camera Communications RollingLight:实现视线光到相机的通信

Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services Pub Date : 2015-05-18 DOI: 10.1145/2742647.2742651

Hui-Yu Lee, Hao-Min Lin, Yu-Lin Wei, Hsin-I Wu, Hsin-Mu Tsai, K. Lin

{"title":"RollingLight: Enabling Line-of-Sight Light-to-Camera Communications","authors":"Hui-Yu Lee, Hao-Min Lin, Yu-Lin Wei, Hsin-I Wu, Hsin-Mu Tsai, K. Lin","doi":"10.1145/2742647.2742651","DOIUrl":"https://doi.org/10.1145/2742647.2742651","url":null,"abstract":"Recent literatures have demonstrated the feasibility and applicability of light-to-camera communications. They either use this new technology to realize specific applications, e.g., localization, by sending repetitive signal patterns, or consider non-line-of-sight scenarios. We however notice that line-of-sight light-to-camera communications has a great potential because it provides a natural way to enable visual association, i.e., visually associating the received information with the transmitter's identity. Such capability benefits broader applications, such as augmented reality, advertising, and driver assistance systems. Hence, this paper designs, implements, and evaluates RollingLight, a line-of-sight light-to-camera communication system that enables a light to talk to diverse off-the-shelf rolling shutter cameras. To boost the data rate and enhance reliability, RollingLight addresses the following practical challenges. First, its demodulation algorithm allows cameras with heterogeneous sampling rates to accurately decode high-order frequency modulation in real-time. Second, it incorporates a number of designs to resolve the issues caused by inherently unsynchronized light-to-camera channels. We have built a prototype of RollingLight with USRP-N200, and also implemented a real system with Arduino Mega 2560, both tested with a range of different camera receivers. We also implement a real iOS application to examine our real-time decoding capability. The experimental results show that, even to serve commodity cameras with a large variety of frame rates, RollingLight can still deliver a throughput of 11.32 bytes per second.","PeriodicalId":191203,"journal":{"name":"Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125276781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 129

Visually Fingerprinting Humans without Face Recognition 没有面部识别的视觉指纹识别人类

Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services Pub Date : 2015-05-18 DOI: 10.1145/2742647.2742671

He Wang, Xuan Bao, Romit Roy Choudhury, Srihari Nelakuditi

{"title":"Visually Fingerprinting Humans without Face Recognition","authors":"He Wang, Xuan Bao, Romit Roy Choudhury, Srihari Nelakuditi","doi":"10.1145/2742647.2742671","DOIUrl":"https://doi.org/10.1145/2742647.2742671","url":null,"abstract":"This paper develops techniques using which humans can be visually recognized. While face recognition would be one approach to this problem, we believe that it may not be always possible to see a person?s face. Our technique is complementary to face recognition, and exploits the intuition that human motion patterns and clothing colors can together encode several bits of information. Treating this information as a \"temporary fingerprint\", it may be feasible to recognize an individual with reasonable consistency, while allowing her to turn off the fingerprint at will. One application of visual fingerprints relates to augmented reality, in which an individual looks at other people through her camera-enabled glass (e.g., Google Glass) and views information about them. Another application is in privacy-preserving pictures ? Alice should be able to broadcast her \"temporary fingerprint\" to all cameras in the vicinity along with a privacy preference, saying \"remove me\". If a stranger?s video happens to include Alice, the device can recognize her fingerprint in the video and erase her completely. This paper develops the core visual fingerprinting engine ? InSight ? on the platform of Android smartphones and a backend server running MATLAB and OpenCV. Results from real world experiments show that 12 individuals can be discriminated with 90% accuracy using 6 seconds of video/motion observations. Video based emulation confirms scalability up to 40 users.","PeriodicalId":191203,"journal":{"name":"Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131074246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 21