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fsociety is powerfull tool which can be used outdoors (GPS) and in the future in-doors thanks to wi-fi based localization.
You don't have to keep track where you parked your car, tent or where you lost your friends if they few battery cellphone percentage (developed with empathy for battery drain).
Navigate or meet them at any event point
fsocietyEasily find your friends at event, and a lot more