27 Feb '15, 7pm

Android Phone's Battery Use Can Reveal User Location

Android Phone's Battery Use Can Reveal User Location

Most Android smartphone owners probably feel secure knowing that apps must ask permission to access their location. That sense of security is misplaced, say U.S. and Israeli researchers who have figured out how to track smartphone owners based on a mobile device’s battery use alone. The tracking concept works by measuring the overall power consumption of a phone, but it’s really focusing on the power used by ;the phone’s cellular radio. Cellular radio power consumption depends upon the distance to the nearest cellular tower and any obstacles between the phone and tower. That combination of factors creates a unique power consumption profile for each geographic location, allowing researchers at Stanford University and the National Research and Simulation Center of Rafael Ltd., an Israeli defense company, to match power consumption with locations. They detailed their work in ...

Full article: http://spectrum.ieee.org/tech-talk/telecom/wireless/andro...

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