Beacons are small, wireless devices that use Bluetooth technology to transmit signals to nearby smartphones and tablets. They are often used in retail stores, museums, and airports to provide location-based information and services. When a user with a compatible device comes within range, the beacon can send notifications, promotions, or relevant content directly to the device. These devices work by broadcasting a unique identifier that apps on smartphones can recognize. This allows businesses to engage customers with personalized experiences, such as discounts or guides to help navigate a space. Beacons enhance user interaction and improve overall customer experience.