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    Re: Covert Position from a Photo
    From: Greg Rudzinski
    Date: 2013 Jun 16, 19:42 -0700

    Geoffrey,

    Use the back side of a photograph to make a covert latitude longitude grid. A point can be plotted within the grid to position the photographer to a nautical mile. Further refinement of the position can be done if a setting Sun is pictured along with two land marks. A position good to 0.1 NM can then be achieved by plotting two bearings and the horizontal angle circle of position. A natural range would be a nice final touch.

    Don't forget the posing tourists to distract the curious ;-)

    Greg Rudzinski

    Position from a photo
    From: Geoffrey Kolbe
    Date: 2012 Dec 27, 13:49 +0000
    Suppose you wish to covertly record the location of a stash of gold
    buried in the Sahara desert (say). Could you take a casual looking
    photo which would convey enough information to make a fix within a
    few nm of where the photo was taken?

    Thanks

    Geoffrey

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