Ключевые слова: background, black, business, chroma, chroma key, computer, device, digital, display, finger, gesture, gesturing, green, green screen, hand, hold, holding, horizontal, human, index finger, internet, isolate, isolated, lifestyle, male, man, mobile, mockup, modern, people, phone, screen, scroll, show, showing, smart, smart phone, smartphone, tap, technology, telephone, touch, touchscreen, use, using, watch, young,