"Geographic" location of indoor devices

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In geographic locations, GPS or triangularization with cellular antennas is almost a "problem solved," even with features and facilities available in the API of the main operating systems for mobile devices such as Android and iOS.

But how is the "geographic" location (between quotation marks here because it is not quite a location on the globe) made of mobile devices indoors, such as a large ballroom? Is there any standardized or easy-to-use solution for this?

PS: In some comments commercial tools have been indicated that do this (and this information was certainly very welcome!), but I would like to have an answer detailing the operation of one (or more!) of these solutions because I believe that this would be useful also for the whole community of the SOPT.

    
asked by anonymous 27.07.2014 / 00:11

1 answer

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I'm working out a solution like this for the university where I work.

It follows the comment line of @bfavaretto, with NFC tags to facilitate individual location (an individual can 'sign' in a given environment), but for spatial location the solution is based on Google Maps Geolocation API .

post on Techcrunch a>:

  

The Google Maps Geolocation API [...] tries to triangulate your   position, watching for cell towers and Wi-Fi hotspots   around you. [...] According to Google, this service is intended [...]   allow a better location in the interior (where the GPS does not work).

The API is calibrated over time by crossing information from its internal maps (creating boundaries, or boundaries in API terminology) with statistical analysis of the data captured on each request WiFi connections, mobile service antennas [even if you are not connected to them], and eventual GPS, along with signal quality). That is, in theory it gets more accurate over time.

For viewing, you can use Google Indoor Maps , which even allows high resolution internal photos via Street View : link

More about technology in this article:

Bonus: The 5 Most Used Indoor Geolocation Technologies:
link

    
29.07.2014 / 18:01