Geo-fencing is a location-based technology that uses GPS or RFID signals to create virtual boundaries or “geo-fences” around physical locations. In academia, geo-fencing is studied within the fields of mobile computing, geospatial analysis, and marketing geography. Researchers investigate geo-fencing technology, including geofencing algorithms, location tracking methods, and proximity-based triggers, to enable targeted marketing, location-based services, and personalized user experiences. Geo-fencing applications range from retail promotions and event marketing to asset tracking and fleet management, offering opportunities for organizations to engage customers, enhance safety and security, and optimize operations based on real-time location data. By leveraging geo-fencing, organizations can deliver contextually relevant messages, offers, and alerts to users within defined geographic areas, driving foot traffic, increasing conversions, and improving customer engagement and loyalty. Academic studies on geo-fencing also explore its privacy implications, regulatory compliance, and emerging trends such as geo-conquesting, geo-targeting, and location-based analytics to support data-driven decision-making and innovation in location-based marketing and mobile services.