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Smartphone with FM Radio Tells Your Position

posted by LaminatorX on Wednesday May 21 2014, @03:54PM   Printer-friendly
from the Radio-Gaga dept.

kaszz writes:

The reason why FM receivers are present on smartphones is that they can be used to locate your position by noting a simple thing as signal strength of transmitters. More advanced methods makes use of SNR, frequency deviation and multipath interference characteristics. And the same method can be used for WiFi which of course makes collection of such data very useful for localization purposes where GPS etc isn't useful. Arrival time of a radio signal that is reported to the operator from many devices may also be used for the same purpose.

 
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  • (Score: 0) by Anonymous Coward on Wednesday May 21 2014, @10:04PM

    by Anonymous Coward on Wednesday May 21 2014, @10:04PM (#46158)

    NPR so I can get some real information with the news

    While NPR might be slightly better than regular for-profit radio, it has corporate sponsors.
    The content of their shows is molded as to never upset those sources of income:
    What is said is suspect as to its completeness.
    ...then there are the topics you will never hear at all on their airwaves.

    In my area, the only truly uncensored, non-commercial radio is an affiliate of Pacifica Radio. [wikipedia.org]
    Pacifica only accepts money from listeners.

    -- gewg_