Tracking your smartphones location via aggregate battery usage is not the most efficient or accurate method but it can be done and Samsung (and others) have not provided a switch which makes that particular data private. Researchers have shown that by tracking the battery drain of the 3G cellular radio on the battery one can determine distance from the cellular base station the phone is connected to and a coarse location based on interference environmental factors such as buildings which partially block the signal. It is only a very coarse locator but does give better information than just the base station the phone is connected to and as we are creatures of habit it allows tracking normal patterns of movement. This is nowhere near as accurate as GPS tracking and does require a bit of work to pull off but as battery usage and levels are sent by the phone in the clear with no method of preventing that it should cause some privacy concerns for users. You can read the research paper (in PDF) by following the link from The Inquirer.
"SCIENTISTS have warned of a new smartphone risk after discovering that battery power can be used to track a person's movements."
Here is some more Tech News from around the web:
- A billion things are already on the IoT: Verizon @ The Inquirer
- ARM and IBM bolster Internet of Things with cloud-based mbed starter kit @ The Inquirer
- May the fourth be with you: Torvalds names next Linux v 4.0 @ The Register
- UK Scientists Claim 1Tbps Data Speed Via Experimental 5G Technology @ Slashdot
- Intel Moving Forward With 10nm, Will Switch Away From Silicon For 7nm @ Slashdot