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.

Safari website usernames and passwords

Credit card information

Wi-Fi network information

Ensure Mail, Contacts, Calendar and Messages are synced across all your devices

Protect, access and deploy your LinkedIn, Twitter and other Internet account logins and passwords.

How does iCloud Keychain work?

iCloud Keychain must be enabled on each device. Devices that are not enabled for the service will not be able to access the information it holds, so you’ll need to enter your passwords and other details manually.

How do I use iCloud Keychain in Safari?

When registering for a new website or service you will be asked to enter your information in the site’s registration fields. iCloud will populate these fields with things such as your name and telephone number. You will also be asked to create a password by entering your new password in the password field and the password confirmation field. When you tap your cursor in the first of these fields you will see a small item appear, tap this to use an iCloud supplied password. In practice, if you use your own password or one supplied by iCloud, it should be stored for later use by your iCloud Keychain.

How do I add credit card details to iCloud Keychain?

You can also add your credit card details to iCloud Keychain. You can choose to follow on-screen prompts to do so automatically as and when they appear, or enter these details manually as follows:

On a Mac : Open Safari’s AutoFill item in Preferences. Look for the Credit Cards item and tap Edit. In the next screen, you will be able to add and delete new cards. Tap Done.

: Open Safari’s AutoFill item in Preferences. Look for the Credit Cards item and tap Edit. In the next screen, you will be able to add and delete new cards. Tap Done. On iOS: In Settings, open Safari>Autofill. Here you can choose to enable or disable Autofill of names and passwords, and as well as control what credit card information is held. Tap Saved Credit Cards, and you will be able to add or delete your stored credit card information. Tap Done.

How do I use iCloud Keychain to find website passwords?

You may sometimes want to check your user name and/or password information manually. You can use iCloud Keychain to help you do this; you can also copy and paste this information into other apps if you want. It is very easy to do:

On a Mac: Open Safari>Preferences and tap Passwords. You’ll be asked for a password. In the next page, you’ll be presented with a searchable list of your websites, user names and passwords. Copy and paste these using Control-Click.

Open Safari>Preferences and tap Passwords. You’ll be asked for a password. In the next page, you’ll be presented with a searchable list of your websites, user names and passwords. Copy and paste these using Control-Click. On iOS: Open up the Accounts & Passwords item in Settings, then tap the App & Website Passwords item. You’ll need to use TouchID, FaceID or a passcode and will then be able to access a searchable list of all the website passwords you use.

You can also delete items from these collections.

[ To comment on this story, visit Computerworld's Facebook page. ]

How do I enable/disable iCloud Keychain?

Here is how to enable or disable iCloud Keychain on your system:

On a Mac : Open System Preferences>iCloud>Check (or uncheck) Keychain. You’ll need to enter your Apple ID and follow a series of on-screen instructions.

: Open System Preferences>iCloud>Check (or uncheck) Keychain. You’ll need to enter your Apple ID and follow a series of on-screen instructions. On iOS: In Settings, open Apple ID>iCloud>Keychain Toggle to on (or off). Once again, you’ll need to enter your Apple ID and follow a series of on-screen instructions.

You must follow these steps for each device you want to enable for iCloud Keychain.

What happens when I add a new device to iCloud Keychain?

Something interesting happens when you do enable a new device — all your currently enabled devices will receive a notification requesting you approve the new device to join your chain.

You must manually approve each addition from one of your existing collection of registered devices.

That’s a good thing — it means you can usually expect a similar warning if someone tries to bring a device you do not own into your chain, and you can reject such a request.

In some cases, you may not have access to any of your existing devices. In that case you will need to use your iCloud Security Code, or use something with the SMS phone number associated with your iClloud/Apple ID account.

The iCloud Security Code is created when you first set up iCloud Keychain. If you no longer know that code, please follow these instructions.

Is iCloud Keychain safe?

Most users can’t easily figure out if password management solutions from third-party vendors can be trusted. That’s not the case with iCloud Keychain, which is published by a developer with the resources to act quickly in the event a compromise is found. Security researchers occasionally identify potential flaws, which Apple customarily fixes fast. The best way to keep your iCloud Keychain safe is to keep your device software up to date.

Technically, iCloud Keychain is highly secure:

Keychain passwords and credit card numbers are encrypted with 256-bit AES (Advanced Encryption Standard).

End to end encryption — your data is protected with a unique (device) key and your device passcode, which only you know.

Two-factor authentication is also recommended.

Apple also maintains a privacy policy. You can read it here.

iCloud Keychain will also suggest and remember highly complex passcodes to you when they may be required, such as when registering for a new website service. That makes it much easier to follow good security practises, such as using a different passcode for every service.

What else can iCloud Keychain do?

On a Mac, you can also create and store secure notes in your iCloud Keychain. Such notes require their own password, as well as your account password, to access, making them highly secure spaces to store things such as software licenses.

To create a secure note, open the Keychain application on your Mac, select ‘Secure Notes’ and click the Plus button. Write and name the note and tap Add. To access that note in the future you will need the password you set.

Further reading

Here are some other useful articles to help you get more from using iCloud:

Any more questions?

Please drop me a line if you have any more questions (or answers) concerning iCloud Keychain.

Google+? If you use social media and happen to be a Google+ user, why not join AppleHolic's Kool Aid Corner community and get involved with the conversation as we pursue the spirit of the New Model Apple?

Got a story? Please drop me a line via Twitter and let me know. I'd like it if you chose to follow me there so I can let you know about new articles I publish and reports I find.