Ключевые слова: access, accessibility, authenticate, authentication, authority, authorized, button, closed, code, control, door, door handle, electronic, enter, entrance, entry, home, identification, indoors, key, keyless, lock, modern, numeric, open, pass, precaution, privacy, protect, protection, safeguard, safety, secure, security, service, stainless steel, system, technology, unlock, validation, wooden,