With the increasing pervasiveness of smartphones over the past few years, many emerging location based applications are adopted by mobile users. NDERSTANDING human mobility in daily life is a fundamental resource for broad-domain applications, especially for the applications that provide location based services. IndexTerms Location tracking, smartphone, sensor.
Evaluation on traces from real users demonstrates that SensTrack can significantly reduce the usage of GPS and still achieve a high tracking accuracy.
Google mytracks still usable android#
We implement a prototype on an Android smartphone that can sample the related sensors during the users movement and collect the sensor data. A technique is employed to reconstruct the trajectory from the recorded location samples. SensTrack selectively executes a GPS sampling using the information from the acceleration and orientation sensors and switches to the alternate location sensing method based on Wi-Fi when users move indoors. We introduce SensTrack, a location tracking service that leverages the sensor hints on the smartphone to reduce the usage of GPS. To this end, our goal is to improve the energy-efficiency of traditional location tracking service as well as to expand its coverage areas. Although GPS is often preferred over its alternatives, the coverage areas of GPS are still limited (GPS typically cannot function indoors). Unfortunately, as the core enabler of most location tracking applications on smartphones, GPS incurs an unacceptable energy cost that can cause the complete battery drain within a few hours. Many, if not all, smartphones are equipped with a powerful sensor set (GPS, Wi-Fi, the acceleration sensor, the orientation sensor, etc.), which makes them capable of accomplishing complicated tasks. Shwetha S M Ranjan R Nandini Murthy H N Shruthi SĪbstractNowadays, as smartphones are becoming more and more powerful, applications providing location based services have been increasingly popular. SensTrack: A Versatile Energy-Efficient Location TrackingWithSmartphone Sensors SensTrack: A Versatile Energy-Efficient Location Tracking With Smartphone Sensors
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