With iOS 12, Apple offers its users more options than ever before to create, store, and manage stored passwords. Not only can iOS 12's AutoFill feature create new passwords, but you can also access your entire iCloud keychain with Siri quickly and efficiently. Why should you search for passwords yourself if you can ask your iOS assistant to find them for you?
Now, not everyone can ask Siri for access to your entire password keychain. As you'll see below, your iPhone will still need authentication before Siri can display a username and password on an iCloud Keychain page. It's another reminder of how good security can protect your iPhone and its data.
Viewing one of your saved iCloud Keychain passwords with Siri is almost as easy as setting an alarm. Just activate Siri with the Home button, Side button, Tap Siri or "Hey Siri" shortcut, then say or tap "Show me my passwords" or "Show me my password for [account name]."
You will then need to provide either a face ID, a touch ID, or a passcode authentication to display that password. Once you have done this, your username and password will be immediately displayed on your Keychain page for the site.
When you ask Siri to find a password for a website or app Not included in your keychain, Siri will still fulfill the request, but will perform a search for your website without results being found. The same will happen if Siri misinterprets you and this misinterpreted page does not exist in your keychain. If the misinterpreted page exists, Siri will call you the keychain page for you instead of what you wanted.
The use of Siri to quickly find passwords is especially helpful if you need to sign in to another device that is not connected to iCloud Keychain, or if you want to share a password with your partner. Using the AutoFill option on your iPhone is the easiest way to sign in to accounts in Safari and supported apps.