BLE Beacon

A BLE (Bluetooth Low Energy) beacon is a small wireless transmitter that broadcasts a signal at regular intervals, which can be detected by nearby smartphones to determine a user's indoor location. In accessibility contexts, networks of BLE beacons are widely used to enable indoor navigation and wayfinding for blind and low-vision users in spaces where GPS is unavailable or unreliable, such as transit stations, airports, shopping centers, and public buildings. While beacons can provide more accurate indoor positioning than GPS alone, their deployment requires installation, maintenance, and ongoing support from building managers, which can be a significant barrier to adoption.