Ключевые слова: 3d, art, automation, concept, contour, control, defense, design, door, electronic, handle, home, house, icon, illustration, insurance, isolated, isometric, line, linear, lineart, lock, mobile, network, outline, padlock, phone, pink, protect, protection, safe, safety, secure, security, set, sign, signal, smart, smartphone, square, symbol, technology, water, wifi, wireless,