7
In external environments, the geographical location, made by GPS or triangularization with cell antennas, is already practically a "problem solved", counting on resources and facilities available in the API of the main operating systems for mobile devices, like Android and iOS.
But how is the "geographical" location (in quotes here because it is not quite a location on the globe) of mobile devices in indoor environments, such as a large ballroom? Is there already a standardized or easy-to-reuse solution for this?
P.S.: In some comments were indicated commercial tools that do this (and this information was certainly very welcome!), but I wish to have an answer detailing the operation of one (or more!) of these solutions because I believe this would be useful also for the entire SOPT community.
Interesting question. The only solution I know for this (proprietary and for a very specific purpose) depends on the installation of several sensors in the environment you want to monitor. But if you have multiple mobile devices on a wireless network, must be possible to make some kind of triangulation and detect its position in relation to the router.
– bfavaretto
@Bfavaretto Sensors of what type? If you can provide an answer giving some tips on how this proprietary solution works (of course, if you can disclose the information), it will surely be helpful. :)
– Luiz Vieira
From a researched by "indoor Positioning", so I researched there are some proprietary solutions (using Wifi). I found these two developers: http://www.wifarer.com/ and http://www.meridianapps.com/. Looking fast, I don’t know if they offer the accuracy you need, but they come close.
– Wakim
I don’t know what the "sensors" are, and I actually think they’re not sensors, but small radio transmitters. Each is installed in a previously known position, and the mobile device orients itself according to them. They solutions via Wifi that Wakim linked seem simpler, and are worth a try.
– bfavaretto