My company are providing a mobile positioning service using information from mobile network towers, so called cell-id data.
Our database is built by crowd sourced data. End-users all around the world is feeding data to our database.
We have right now a need to improve our coverage in Brazil in the Rio De Janeiro, Petroplis, Tres Rois area.
To help be able to help us, the only thing you need is an Android smart phone, downloading our app, run that app, and then driving or traveling around in that area.
See www.combain.com for more information