iCloud Keychain is used to syncs information such as passwords, credit card details across all Apple devices PHOTO: REUTERS Third-party password managers have recently become popular mainly because they are more encrypted than built-in password managers that come with your Apple or Google operating system. iCloud Keychain remembers things, so that you don't have to. It auto-fills your information—like your Safari usernames and passwords, credit cards, and Wi-Fi passwords on any device that you approve. Here is how you can move your password data to iCloud Keychain. If you are using a macOS device: If you have a macOS device simply go to your 'System Preferences' app and click on the Apple icon that is on the upper left corner. If you own a macOS Mojave or an earlier operating system then press the iCloud option.