They are mobile, multilingual humanoids or wheeled bots with touchscreens, voice AI, and sensors that greet travelers, answer queries on flights/gates/facilities, provide directions, and escort to zones via navigation. Handles repetitive tasks to free staff for complex needs, supports peaks with 24/7 multilingual service, and collects flow data. Deploys in terminals with geofencing, cloud AI updates, and integration to airport databases for real-time info.