How to Set up iCloud Keychain

1 Turn on iCloud Keychain

When you first installed macOS Sierra it will have asked if you wanted to set up iCloud Keychain for your account. If you said no, go to System Preferences > iCloud and select Keychain. Enter your Apple ID’s password to begin the setup process.

2 Add a security code

You’ll be asked to set a security code, used to allow other devices to access the info in your iCloud Keychain. Entering this code incorrectly too many times will wipe your keychain from Apple’s servers and you’ll have to start all over again, so be wary of that!

3 Where is your data?

Your existing data (site accounts, Wi-Fi networks, internet accounts) will be uploaded to iCloud and, from there, to any devices which use the same iCloud account. You can manage data in the Keychain Access app, or under Passwords in Safari’s preferences.

4 Keep Keychain local

If you have opted not to set a security code, data you add to your keychain is stored on your device, but isn’t updated on your other devices. Beware that this will prevent Apple from helping you recover the keychain’s contents if you ever lose them.

5 Add bank card details

Safari offers to save your credit and debit card numbers when you enter them into online forms. They’re then stored, securely, in your iCloud Keychain, too. To add others, open Safari’s preferences, click AutoFill, then Edit beside Credit Cards, and then Add.

6 Set up Keychain on iOS

On your iPad, iPhone or iPod touch, go to Settings > iCloud > Keychain and tap the switch to turn it on. Enter your Apple ID password, then opt to authorise from another device (your authorised Mac, for example), or tap Approve with your security code.

7 Permit the new device

If you opted to authorise an iOS or macOS device from another one, notifications will pop up on those you’ve authorised. Click or tap on the notification, then select Continue. Enter your Apple ID’s password to grant the device access to your iCloud keychain.

8 Maintain security code

If you opted to use a security code, confirm the phone number Apple has on its records, then watch for a text message containing a six-digit code. Enter this code into the dialog on the iOS device to complete the process. iCloud Keychain is now ready for you!