Ключевые слова: 4k, app, business, chroma, chroma key, closeup, communication, connection, desk, device, display, entertainment, fingers, gadget, gesture, green, green screen, hand, holding, internet, iot, isolated, key, laying, macro, man, mobile, mobile phone, mockup, motion tracker, on person, phone, screen, scrolling, sharing, smart phone, smartphone, social media, social network, socialization, swiping, table, technology, template, touch, touchscreen, tracker, tracking points, using,