Two-Factor Authentication (2FA) is a security feature that adds an extra layer of protection to your accounts by requiring not only a password and username but also something that only the user has on them, i.e., a piece of information only they should know or have immediately to hand. On macOS, 2FA can be enabled to enhance the security of your Apple ID, which is crucial for accessing various Apple services and features.

Enabling Two-Factor Authentication on macOS

1. Open System Preferences:

• Click on the Apple logo in the top-left corner of your screen.


• Select "System Preferences" from the drop-down menu.

2. Access Apple ID Settings:

• Click on "Apple ID" in the System Preferences window.


• Ensure you are signed in with your Apple ID.

3. Navigate to Password & Security:

• In the sidebar, select "Password & Security."

4. Enable Two-Factor Authentication:

• Look for the "Two-Factor Authentication" section.


• Click "Turn On Two-Factor Authentication."


• Follow the on-screen instructions to complete the setup, which may include verifying your identity with a trusted device or phone number.

Using Two-Factor Authentication

Once 2FA is enabled, you will be prompted to enter a verification code when signing into your Apple ID on a new device. This code is sent to your trusted devices or phone number.

Examples

Example 1: Signing into a New Device

• When you sign in to your Apple ID on a new macOS device, you will enter your password as usual.


• You will then receive a notification on your trusted devices, such as your iPhone, with a verification code.


• Enter this verification code on the new device to complete the sign-in process.

Example 2: Managing Trusted Devices

• To view or manage your trusted devices, go to System Preferences > Apple ID > Password & Security.


• Here, you can see a list of devices that are associated with your Apple ID and remove any that you no longer use.

Alternatives and Equivalents

If you are looking for additional security measures beyond Apple's built-in 2FA, consider using third-party authentication apps like Authy or Google Authenticator. These apps can provide time-based one-time passwords (TOTPs) for various services that support 2FA.