Ключевые слова: ability, adult, african american, aperture, art, attention, beautiful woman, biometric, blinking, brown, care, circuit, closeup, copy space, correction, curiosity, eyelid, eyesight, female, gray hair, guard, happiness, health, human head, id, identify, key, looking, macro, male, man, nerve, observation, opened, optical, password, people, portrait, recognition, retina, scanning, see, senior adult, sense, sight, slow motion, south africa, verification, watching, woman,