Ключевые слова: access, alarm, authorized, building, button, camera, chapman, customer, dark, design, device, door, electronic, enter, equipment, female, finger, gate, girl, guest, hand, hawker, intercom, intruder, lens, lock, look, modern, mysterious, number, office, palm, pass, password, peddler, pedlar, people, precaution, protection, safety, secret, security, shadow, sign, stranger, system, talk, video, visitor, voice, wall, woman,