59> How to set up two-factor authentication

1What is it?

Two-factor authentication is a new security system from Apple. It’s similar to two-step authentication, but easier to use because codes are sent directly to your devices (rather than as an SMS text message). It also doesn’t require users to print out, and safely store, a super-secret emergency key (previously, this caused problems for people who lost them). It also makes it possible for Apple to help you to recover your account if you completely forget your password and lose all your devices.

2 How to set it up

Two-factor authentication is being rolled out by Apple to users in stages, so you don’t sign up for it. Instead, it’ll be offered to you during setup. If you’ve already configured it, then you can check your status by choosing System Preferences > iCloud > Account Details > Security. To turn on two-factor authentication you must give Apple at least one phone number. In fact, it’s best to provide Apple with a second number as a backup, in case you lose (or change) your phone number down the line.

3 Manage your devices

With two-factor authentication set up, a six digit code is sent to your other devices (running El Capitan or iOS 9) when you try to log on to Apple services when you enter your password to use a service such as iCloud, or buy from the iTunes or App Stores. Enter the code to confirm that you actually made the request. This way, even if somebody hacks your passcode they still can’t log on to your account. Manage your trusted devices in System Preferences > iCloud > Account Details > Devices.