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Hi,

I am developing a website Using MVC 4, this website will be accessed by mobile (Smartphones) users only. Is it possible to trace or guess a user's current access point which is in the building?
Is there any Specific Network configuration of routers/access point required which we need to do for doing the same?
The website will be used only in building local network using Wi-fi. so, no internet connectivity required.
Posted 22-Apr-13 8:00am
Updated 23-Apr-13 0:38am
v2
Sergey Alexandrovich Kryukov 22-Apr-13 15:54pm

How about thinking just a bit? :-)
—SA

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## Solution 1

Yes, you can. Each package going up has to spend energy to work against gravitation. The energy needed to move up is equal to `m×g×h`, where `g` is the gravitational field of the Earth, the same as the acceleration of the free falling body and `h` is the elevation, and `m` is the mass of the package. When the package goes down, it spends equal amount of potential gravity in the gravitational field of the Earth. This way, if yo measure elevation between each floor and the energy of your packages in all situations, you can calculate the floor from each message was sent.

Everything else is just the matter of solving of algebraic equations you should know from middle school.

Good luck,
—SA
v2
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## Solution 2

I Achived this by creating separate VLan for each access point. IP allocation was done by a common DHCP server, a different range of IP address for each access point, and for all access points maintained a database storing location for them. so just by getting user IP address I was able to resolve his location.
Also note that there was no router used for network setup, so I got user's mobile IP address directly.

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