Bluetooth Low Energy

A wireless communication technology designed for short-range data transmission with minimal power consumption. In accessibility contexts, BLE is widely used for indoor positioning and wayfinding systems through small transmitter devices called beacons. When a smartphone detects a BLE beacon signal, it can determine its approximate location within an indoor space, enabling turn-by-turn navigation for people who are blind or have other disabilities. BLE-based systems are more practical than alternatives like RFID or Wi-Fi fingerprinting because beacons are inexpensive, battery-powered, and easy to deploy.