Ключевые слова: access, alarm, alert, appliance, arm, at home, authorization, background, bell, button, cctv, closeup, code, combination, concept, control, crime, device, digital, door, electronic, hacker, hand, home, house, identification, indoor, intercom, key, keypad, lock, man, modern, password, precaution, private, protect, protection, safe, secure, security, set, sign, system, technology, thief, unlock, wall, warning, white,