Ключевые слова: aim, aiming, arm, background, business, button, choice, click, communicate, concept, counting, decide, decision, direct, finger, fingernail, girl, hand, hit, human, idea, index, isolated, manicure, moving, nail, one, palm, person, point, press, push, screen, select, sensor, show, showing, sign, simplicity, solution, success, symbol, thumb, touch,