Re: Can Known Hardware ID Make You Discoverable?

From: David Taylor (djtaylor_at_bigfoot.com)
Date: 08/14/05 

Date: Sun, 14 Aug 2005 18:26:42 GMT

> Ummm... Map of the building in 3D including density of every wall,
> floor, door, ceiling, furniture, books, people, etc which are presumed
> to be stable. I suppose it can be mapped with some type of site
> survey tool that trys to ignore reflections. I dunno. Methinks I'm
> missing something about what they're doing.

The way the software works is that you import a CAD (or even JPG) of
each floor and set a datum point to provide a vertical reference. The
software has a list of attenuations for US standard building materials
or you can do it by measurement or both. Plan first then measure and
compare later for fine tuning.

If the import is a nice dxf with wall types already chosen for the CAD
part then it's quite surprising how quickly you can map the building
with the RF obstacles.

> Well, that's fair. I'm just questioning the accuracy. I can't get a
> stable signal level just standing on one place and they expect to do
> that in a rather large unstable volume. Let's just say I'm suspicious
> bordering on cynical.

I have to say I was surprised with the claim that was made but i'm
interested to see in a weeks time so i'll let you know, it could well be
sales and marketing speak, time will tell. :)

David.

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