From owner-freebsd-bluetooth@FreeBSD.ORG Tue Apr 17 11:48:58 2007 Return-Path: X-Original-To: freebsd-bluetooth@freebsd.org Delivered-To: freebsd-bluetooth@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 898B116A417 for ; Tue, 17 Apr 2007 11:48:58 +0000 (UTC) (envelope-from anderson@freebsd.org) Received: from mh1.centtech.com (moat3.centtech.com [64.129.166.50]) by mx1.freebsd.org (Postfix) with ESMTP id 56A1213C4C9 for ; Tue, 17 Apr 2007 11:48:58 +0000 (UTC) (envelope-from anderson@freebsd.org) Received: from [10.177.171.220] (neutrino.centtech.com [10.177.171.220]) by mh1.centtech.com (8.13.8/8.13.8) with ESMTP id l3HBmv2A057776; Tue, 17 Apr 2007 06:48:57 -0500 (CDT) (envelope-from anderson@freebsd.org) Message-ID: <4624B429.6050702@freebsd.org> Date: Tue, 17 Apr 2007 06:48:57 -0500 From: Eric Anderson User-Agent: Thunderbird 1.5.0.10 (X11/20070320) MIME-Version: 1.0 To: phathwa senene References: <4624A0A6.7050202@yahoo.com> In-Reply-To: <4624A0A6.7050202@yahoo.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: ClamAV 0.88.4/3109/Mon Apr 16 22:59:17 2007 on mh1.centtech.com X-Virus-Status: Clean X-Spam-Status: No, score=-2.6 required=8.0 tests=AWL,BAYES_00 autolearn=ham version=3.1.6 X-Spam-Checker-Version: SpamAssassin 3.1.6 (2006-10-03) on mh1.centtech.com Cc: freebsd-bluetooth@freebsd.org Subject: Re: Bluetooth questions X-BeenThere: freebsd-bluetooth@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Using Bluetooth in FreeBSD environments List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Apr 2007 11:48:58 -0000 On 04/17/07 05:25, phathwa senene wrote: > Hello, my name is Phathwa and i live in South Africa > > I hope that you could answer these questions for me. > > Is there a bluetooth device and software that is able to track my > movement (cellphone) within a room in real time, for example if my > cellphones bluetooth is switched on and i am walking around a room can > the bluetooth device on my computer detect that i am in a different > position as i walk around (can it measure the distance of where i am > from the computer and can it handle multiple cellphones) I don't know of a way to do that accurately, since you can't rely on the timing of the signal due to walls, etc. You could tell of a bluetooth device is within range or not pretty easily. Maybe it's possible by triangulating, but still seems like it would be very inaccurate. Maybe bluetooth isn't the right way to tackle it, and instead there's a different technology that you could use (RFID?). Eric