Ключевые слова: access, access control, antitheft, asset protection, background, black, black background, burglarproof, chain, chain link, chains and locks, closeup, closeup shot, combination lock, concept, deterrent, encrypted, hardened steel, heavy duty, highsecurity, industrial security, intrusion prevention, isolated, key, keyed lock, lock, lock and key, locking mechanism, locksmith, lockup, metal, object, padlock, padlock and chain, padlock symbol, privacy, protection, reliable, restricted access, safe, safety, secure, secure fastening, secure storage, security, security system, solid, steel, strong, tamperproof, vault,