Yes, anonymous is the default mode. :) The nickname is optional and only used to record a leaderboard "points". The nickname is not tied to any reported Wi-Fi or location data.
Mozilla Stumbler does not need to access your photos; it just needs to read/write to your sdcard (to cache map tile graphics and export KML data). "Access your photots" is Google's unfortunate explanation of accessing the sdcard.
Mozilla Stumbler does not need to access your photos; it just needs to read/write to your sdcard (to cache map tile graphics and export KML data). "Access your photots" is Google's unfortunate explanation of accessing the sdcard.