iSign Media Solutions, Inc. is an infrastructure-focused, software-as-a-service company, which engages in the provision of proximity centric location services. The company is headquartered in Richmond Hill, Ontario. The company went IPO on 2008-04-04. The firm is engaged in providing proximity-centric location services. The company specializes in the areas of location-based security alert messaging and proximity marketing, utilizing Bluetooth and Wi-Fi connectivity for complete privacy. Its licensed Passive Historical Aggregate Contact Tracing (PHACT) technology, an intelligent smart space analytics platform, utilizes publicly available anonymous interactions between mobile devices to determine occupancy levels and movements of individuals. The PHACT technology is housed in hardware units called Hybrid Analytics Location Observation (HALO), a software platform and listening device that provides a suite of functions specifically designed to maximize safety and security within a managed environment, such as a school, hospital, shopping plaza or concert venue; and Hybrid Analytics Location Observation with object recognition (HALOfx).