An accelerometer-based method for adaptively managing the use of the WiFi adapter is proposed. We propose a sensor management strategy for adaptive duty cycling and a data upload strategy for indoor situations. Particularly such tracking systems on battery-limited mobile devices must be energy-efficient to limit the impact on the experience of using a phone.


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Recently, there have been a lot of studies of energy-efficient positioning systems, but these have focused on outdoor positioning technologies. In this paper, we propose a novel indoor tracking framework that intelligently determines the location sampling rate and the frequency of network communication, to optimize the accuracy of the location data while being energy-efficient at the same time. This framework leverages an accelerometer, widely available on everyday smartphones, to reduce the duty cycle and the network communication frequency when a tracked user is moving slowly or not at all.

Our framework can work for 14 h without charging, supporting applications that require this location information without affecting user experience. Dezhong Yao is a Ph.


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  • His research interests include wireless networks, ubiquitous computing, context-awareness and data mining. Complete your payment and check your email for the installation instructions. Premium features require rooting your Android or jailbreaking your iOS device. Log in to mSpy Control Panel to start monitoring calls, texts, GPS location, apps and any other activities taking place on the monitored device. Customer satisfaction is the highest priority for mSpy.

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    Along with all of the benefits provided by the development of digital technology, our world is still full of dangers. Moreover, while some of them are obvious, others are hidden in the vastness of the Internet. From cyber bullying to online predators, everyone can become a target, especially when it comes to underage children. This is exactly why we all need a world-class phone tracker, able to secure our kids and businesses!

    Equipped with numerous useful features, including GPS tracking, text and call logs, website blocking, and keyword alerts, the mSpy cell phone tracking software is intended to protect both, minor children from online dangers and business owners from corporate information and assets leakage.

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    Therefore, no matter how caring and attentive you are, it is impossible to know what exactly your kid is doing online or what people they are communicating with until you install a smart mobile phone tracker on the target device. This is actually the only way to protect minors from numerous online dangers that vary from sexting and cyber bullying to inappropriate adult content.

    After all, any of them can seriously harm your innocent child! These ratings can then be used to issue rewards or penalties, such as privileges in loan applications or limits on career progression. These possibilities are not distant or hypothetical — they exist now. Smartphones are effectively surveillance devices , and everyone who uses them is exposed to these risks.

    What we know could be just the beginning.

    Highlights

    Undergraduate Guided Visit — Manchester, Manchester. Proton Beam Therapy — Manchester, Manchester. Available editions United Kingdom. Your emails can reveal your social network.


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    • David Glance Each type of data can reveal something about our interests and preferences, views, hobbies and social interactions. Upturn , CC BY But targeted advertising based on our smartphone data can have real impacts on livelihoods and well-being, beyond influencing purchasing habits. Surveillance data Data security Data privacy smartphone digital surveillance Data surveillance online surveillance. The Conversation is a non-profit.

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      Help knowledge-based, ethical journalism today. You might also like Fitness trackers report their location and map the Burning Man festival in the Nevada desert. Screenshot of Strava Heat Map. Hindu women, who crossed over from Myanmar into Bangladesh, wait for their turn to collect aid at refugee camp in September Is this cloud secure?

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