You can balance both account security with the convenience of autofill when you set up two-factor authentication in iCloud Keychain. Here’s how to do it.
The built-in iCloud Keychain on your Apple device stores all your account credentials for you, and automatically fills them in at the sign-in screen with just your face or fingerprint. However, the baseline Keychain only memorizes your username and password — which could be made more secure.One popular way to increase security is to use hardware only accessible to you, which keeps your account from solely relying on vulnerable virtual credentials. As nefarious attackers steal your account information, via hacks or by phishing, a physical second line of defense accessible only to you secures your content even more.