Described is a location-based interaction system. The system includes a server having a memory storing user data and a user computing device coupled to the server. The server may be programmed to receive and process a signal that user computing devices coupled to external devices have accessed the system and are within a predetermined proximity of each other. The system operates to send alert signals to the external devices, wherein the alert signals may be visual, audio or haptic. The system allows users to communicate through the use of external devices and/or through a communication interface.