A virtual barrier system for determining a position of a mobile device relative to a virtual barrier comprises: a plurality of transmitters configured to broadcast a unique identifier; a management platform for storing positional data for each transmitter; a mobile application for installation on a mobile device. The management platform is configured to communicate with the mobile application. The plurality of transmitters are arranged in pairs, one of each corresponding with a first or second zone. The pairs are positioned to define the virtual barrier between said first and second zones. The management platform is configured to: (a) map the barrier; (b) receive transmitted data from the mobile application when the mobile application detects the unique identifier, and (c) send an alert to the mobile application for display. The first zone and second zone comprise different statuses, and the status of the second zone is dependent upon a specific user.