The present invention provides a system for providing geolocation services in a mobile-based crowdsourcing platform. The system includes a plurality of remote mobile devices configured to communicate and exchange data with a geolocation service based on the crowdsourcing, or polling, of users of such mobile devices to determine location and movement of the users within a specific environment. For example, in an outdoor environment such as a parking lot, the system can track the location of a user's vehicle within the lot and provide the user with an exact position of their vehicle upon the user returning to the parking lot. In the instance of an indoor environment, such as an airport, the system provides a messaging/location alert service for persons within the airport, where any given person's location within the airport can be determined and correlated with an impending departure of a flight for which they are associated.