Rob,
Check out http://cmusky.net.cmu.edu - specifically the Maps section. Some
slight modifications to the code in the way of extracting a users MAC
address and matching it up with the associated dot on the map would produce
the desired effect, thus showing how far a given user is from the source
AP. The maps on the page show user locations and AP locations on separate
maps, but these, of course, can easily be combined.
One issue to keep in mind is privacy. What you are suggesting presupposes
clear-text access to MAC addresses at some level. When developing cmuSKY
we were sure not to provide any identifying information and to run MAC
addresses through strong encryption (and not use them when not completely
necessary).
Does this help answer your question?
Ophir
--On Friday, March 19, 2004 11:40 AM -0800 Rob Kelley
<[EMAIL PROTECTED]> wrote:
In line with providing apps that helps wireless users, I was wondering:
is it possible to create some type of web-based widget that would show
you the strength of the signal given your location? The idea is that
when a user hit the portal, the portal webpage would show up and they
could immediately see how far they were from the source.
First thought was a standalone web app. But I don't know how this
browser-based app would get its information (packet speed?). Does a
browser have access to enough information to deduce signal strength?
Would it be possible to get information from the card itself?
What if there was a web-based plug-in to NetStumbler. If the user has
NetStumbler installed, they can click the image and the view pulls in a
simple dynamic graph. NetStumbler would feed info to the web app.
Would that work?
Are either of these feasible? What are the issues?
Thanks for the help
Rob
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Ophir Tanz
Carnegie Mellon University
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