Ключевые слова: access, accessibility, admission, authenticate, authentication, authority, authorization, authorized, back, background, backstage, badge, blank, burglar, card, cardkey, closed, code, control, copy, cord, door, electronic, empty, enter, entrance, entry, green, guest, hand, home, hotel, id, identification, indoors, inserting, intruder, isolated, key, keycard, keycode, keyhole, member, open, pass, permit, plastic, privacy, protect, protection, room, safety, secure, security, service, space, system, text, unlock, validation, vip, white,