On Wed, Apr 27, 2011 at 4:33 PM, Vitor Boschi <vitorbos...@gmail.com> wrote:
> Actually, Google can use information about which wifi access points (and/or > cell towers in case of mobile phones) your computer see and provide a very > precise location guess based on this. You could try this method too. Correct. But again, google does it globally. I am asking for a local map. Because Google can't get into my sub-routers. Most of the campuses now-a-days are hidden behing NATs. Google shall be able to map same location for all people inside that network. My own insititute is a classic example. Moreover, the point still remains, that if I am in my university campus or my Company campus, or to put it generally, in a LAN, I am more interested in finding locations of people on my LAN, *inside the LAN* only and not globally like Google Latitude. For e.g. a very practical example is, If I am in the library and I want to ask a doubt that I have regarding a concept to my senior, I will need his relative location e.g, is he/she in the hostel, in the library itself or not; coming to know that it is in the same institute (Google latitude output) is of really no use. The method that Vitor pointed out is the one I want to use. As I had explained in the IBM example, if the security guard is 12 mts away from the WAP at the main gate, I can obtain this information. Though I doubt Google uses cellphone towers, I shoudn't think google has access to telephone resources as they are contracted. The telephone base stations are contracted by telephone service providers and do not relay free information. Vitor, the hexagonal cells based method is used currently in the cellphone system. I think for cell-phones, Google uses GPS and Wifi. If you really think, its one of the research areas of wireless ad-hoc networks, to adopt this hexagonal cells implementation in the ad-hoc computer network. Overall, WAPs / Routers etc are the main components of LAN architecture. A combination of these is generally used to create the wifi infrastructure of campuses. Using Reverse DNS methods for wired, and location estimation using signal strength from WAPs for wireless are the Ace methods through which I am imagining the application to work. I may be wrong in my summary, please correct me. -Naman > > Vitor > > > On Wed, Apr 27, 2011 at 1:20 AM, Naman Muley <naman.g.mu...@gmail.com>wrote: > >> >> >> On Wed, Apr 27, 2011 at 9:10 AM, Rohan Garg <rohang...@ubuntu.com> wrote: >> >>> Hi Naman >>> >> Hi Rohan, >> >>> Actually, Google has a bunch of methods to extract your current >>> location, and for desktops, it works best using the IP assigned to your >>> computer ( since most PC's don't have a GPS module ). >>> >> Yeah, and they become pretty lame when trying to work to find out the >> location inside a campus. This is exactly what I want to make. Google >> Latitude can get your location exactly only unto your ISP router. That is >> why they have kept 3 granularity levels i think, country city or something. >> (I tried it some time back). Basically it shows the location of your ISP >> router and not your own location. But I am talking about local mapping like >> inside a campus. Plus, right now, I am in DA-IICT, Gandhinagar, India. >> DA-IICT has a NAT. Everything we do, any of us, we do by the NAT address( >> which currently is 117.211.88.42) . This will restrict the granularity of my >> location to only m y NAT address. I want to find my locaiton inside the >> campus. For that I use pretty much the same method that Google Latitude >> uses, but on the internal architecture of my campus. ( For e.g. DA-IICT has >> 4 main routers, hostel, faculty, library and Lab). consisting of routers and >> sub-routers. >> >> Rohan Garg >> >> Yours, >> Naman >> >>> On Apr 27, 2011 3:43 AM, "Naman Muley" <naman.g.mu...@gmail.com> wrote: >>> > HI Valentin, >>> > >>> > On Tue, Apr 26, 2011 at 11:58 PM, Valentin Rusu <k...@rusu.info> wrote: >>> > >>> >> Hello, >>> >> >>> >> On 04/26/2011 01:15 PM, Naman Muley wrote: >>> >> > Overall, if you have seen Harry Potter - The Prisoner of Azkaban , I >>> >> > am talking about 'The Marauder's Map'. >>> >> Have you seen this before ? >>> >> http://www.google.com/intl/en_us/latitude/intro.html >>> >> >>> >> Yes I have. Google latitude is again a global system. It reads your >>> > latitude and longitude and puts you in that location. I am talking >>> about >>> > making a localized application. I am thinking on how to get location >>> without >>> > the GPS. One of the ways is that I map not on a map but an abstract >>> floor >>> > and label routers by the name of the location. For e.g. John's cubicle >>> is >>> > connected to the router finance.ibm.com. along with 5 other people in >>> the >>> > finance department. Then, based on the topology that router is >>> connected to >>> > its nodes, one should be able to give a bacground-less map. >>> > finance.ibm.comis then connected to say >>> >>> > security.ibm.com which is a WAP. The security guard's phone, based on >>> the >>> > signal strength it receives should be able to create a radius of a >>> > particular distance around the WAP. The point is, if i am an employee >>> of >>> > the HQ of IBM, I dont need to visually see on a physical map where the >>> other >>> > person is. If I am told that he is 12 mts away from the Main Gate >>> (where the >>> > WAP is) that is enough for my purposes.I dont have to see visually >>> where he >>> > is roaming. I don't know if i have convinced you of the method. PLease >>> reply >>> > with further points. >>> > >>> > Valentin >>> >> >>> >> >>> >> >> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to >>> >> unsubscribe << >>> >> >>> > >>> > yours Thinkingly, >>> > Naman >>> >>> >>> >> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to >>> unsubscribe << >>> >>> >> >> >> >> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to >> unsubscribe << >> >> > > > >> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to > unsubscribe << > >
>> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to unsubscribe <<
