iBeacon is a Bluetooth Low Energy (BLE) technology enabling mobile devices to trigger apps based on proximity to a beacon, enhancing location services beyond traditional GPS. iBeacons, which are affordable and long-lasting, use a unique UUID, along with optional major and minor values, to identify and categorize different beacons within a network. The technology finds applications in various sectors, notably retail for enhancing in-store experiences, and has potential for broader uses in indoor navigation and notifications.