If you do want your credit card information stored, every time you use the website linked with that credit card, you will be asked to enter the credit card's security code. For example, you do not have to provide all your passwords and you do not need to provide credit card information. You have control over which information should be used. Passwords, user names, wireless account information, and Internet accounts are automatically transferred when the Keychain is enabled. Keychain FunctionsĪccording to Apple's FAQ, 'iCloud Keychain keeps your Safari website usernames and passwords, credit card information, and Wi-Fi network information up to date across all of your approved devices that are using iOS 7.0.3 or later or OS X Mavericks v10.9 or later.' Available since late October 2013, iCloud Keychain is a management tool that can help you get your passwords, authentication, payment, and login information under control across all of your Apple devices and computers. When the new iCloud Keychain feature was announced at Apple's June 2013 Worldwide Developers Conference, it was met with great excitement.