Hi, I would like to introduce you the (mostly) GSM cell mapping project, www.openbmap.org . I think this could be a data source for geoclue.
We do map the GSM cell coverage, and are currently talking about WiFi and Bluetooth mapping for the future. The main difference between us and other similar projects, is that we care about quality of data, and not only quantity. For example, the GPS position we log, saves GPS HPV-DOPs, which are kind of the position quality, and speed. If you have a measure at 5km/h or 150 km/h, obviously the first one is more accurate. We also log the software source (id and version) in order to be able to filter data afterwards, if a bug is discovered. Etc. We are open to log anything people find useful, in order to allow people trying new location algorithms, research security stuff, etc. The idea is to build a database that could be used as data for the community of hobbyists, researchers, scientists, etc... The main logging application runs on top of freesmartphone.org framework, on the openmoko Freerunner. We also have a windows mobile client. Web API is available, to get your position out of your GSM cell info. But the idea is to allow having a local database on your phone, in order to protect your privacy (no need to ask a third party), to allow positioning without data connection, etc. We are currently talking with people from freesmartphone.org in order to see how we could build a location service in the framework. Raw data (the XML files contributors upload) are available for download (creative commons). We also propose a bunch of sql files containing the position and radius of cells from our database. This has been used to build a proof of concept of a Dbus service using a sqlite file on the phone. I hope I have raised your interest. Please let me know if you want some more infos, or if you are not interested. Onen _______________________________________________ GeoClue mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/geoclue
