I have a follow up question on Android permission checking. Can someone shed some light on how sensor data is protected by the permissions? For example, take GPS location, if I grant the "ACCESS_FINE_LOCATION" permission, how does that work in the location manager to grant or deny an application to the GPS location info. I know that the ACCESS_FINE_LOCATION permission is not associated with a GID, so permission checking should not be done by a GID checking on a file for GPS info. So how exactly is that done? I have read somewhere that the GPS location is written to /data/ local/ dev/smd27, I can't find this file, maybe because I am using the emulator and there is not a real GPS chip which stores the data there? Thanks very much, -J
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