[FoRK] moar change we can believe in!
lucas.gonze at gmail.com
Wed Sep 16 20:02:54 PDT 2009
On Wed, Sep 16, 2009 at 6:06 PM, Stephen D. Williams <sdw at lig.net> wrote:
> If a subject had to instantly
> respond with a signal based on communication from 3 distant, circularly
> diverse transmitters (i.e. spaced roughly 120 degrees around a circle from
> the subject), those transmitters together, or other listeners in strategic
So awesome. A whole world of hacking based on non-digital techniques opens up.
Another one: using Doppler shift. For example, the signal is sent
from a moving object whose exact position and speed aren't known in
advance. The object's position and speed relative to the subject then
determine its Doppler shift, and they can vary enough that the only
way to know them is to measure them.
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