The iphone will use information obtained from the built-in cellular,

Wi-Fi, or GPS hardware to triangulate a location fix for the device.

Depending on how accurate you want it to be, will help determine what

it will use. More accuracy more power use. But as accurate as you

want it(room inside building), not being able to use GPS may be an

issue. Would just have to be something you test out. If you have an

iphone, I can send you a sample app so you can gauge its accuracy.

Casey McGuire

On Wed, Mar 2, 2011 at 2:13 PM, Kevin Cully

<kcully@cullytechnologies.com> wrote:

> I am doing a feasibility study for an application that is cell phone

> based.  This application will be written for the multiple phone

> platforms: iPhone, Android, Symbian, Win7, etc.  The heart of this

> application will help the user know their location *inside* of a (known)

> building.  We are hoping to use multilateration via cell_id and round

> trip times to three or more cell towers.

>

> This application will not be using GPS as the application is intended to

> be run inside of various buildings.

>

> I'm currently looking for consultants that have experience in this area

> for one or more of the phone platforms.  If you have had experience in

> this area, or know of someone that has done something along these lines,

> have them drop me an email.

>

> Thanks,

> Kevin

>

>

>

[excessive quoting removed by server]

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