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Apple’s password manager for Macs, iPhones and iPads, iCloud Keychain is designed to keep passwords, credit card details, Wi-Fi logins and lots of other critical data safe while also making it much easier for you to create and recall complex passcodes.
What does iCloud Keychain do?
When you enter a new password in Safari, you’ve probably seen iCloud Keychain ask if you would like it to save it for use across all your devices. So long as you are running iOS 7.0.3 or later or OS X Mavericks 10.9 or later, iCloud Keychain will store the following items securely in iCloud. Once secured in iCloud Keychain, you will be able to access all these items securely from any Apple system logged into your Apple ID.