Ключевые слова: access, accessibility, admittance, authorized, bar, blue, burglars, buying, closed, code, concepts, confidence, confidential, danger, dial, enter, entrance, entry, handle, insurance, isolated, isolation, key, locked, locker, locks, metal, metallic, metals, numbers, numerical, others, padlocks, passwords, precautions, preserve, privacy, private, protected, protection, risks, safe, safeguard, safety, secret, secure, security, selling, shopping, simple, steel, technology, theft, tools, trust,