iCloud Keychain can be used offline (although it doesn&#x27;t work with other platforms). <a href="https:&#x2F;&#x2F;support.apple.com&#x2F;en-us&#x2F;HT204085" rel="nofollow">https:&#x2F;&#x2F;support.apple.com&#x2F;en-us&#x2F;HT204085</a>