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This is the fast changing digital world, where security has become the subject of optimum importance. Even slight mistake or carelessness can cause irreparable damage. In the wake of the rampant cyber crime and jaw-dropping audacity of hackers in stealing confidential data, it pays to be extra caution.

To offer an utmost safeguard to your Apple ID or iCloud account, Apple has introduced Two-Factor authentication. When enabled, it will allow you to access your account only on the devices you completely trust. The best thing about it is that even if someone has succeeded in stealing your password, he cannot have the access to your account.

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How to Turn On Two-Factor Authentication for Apple ID on iPhone and Mac

With Two-Factor authentication, whenever you sign into a new device like iPhone or Mac for the first time, you will have to not only enter the password but also authenticate it using the six-digit verification code which displayed automatically on your trusted device.
As for instance, if you sign in to your account on your iPad, you will be prompted to enter the six digit code which will appear on your iPhone, which you have trusted.

Currently, Two-factor authentication is available to all iCloud users who have at least one device running iOS 9 or OS X El Capitan or later.

Two-Factor authentication is different from Two-Step Verification. For more information, check out our post on how to turn on Two-Step Verification.

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How to Set Up Two-Factor Authentication for Apple ID from iPhone/iPad

Step #1. Launch Settings on your iOS device Tap on iCloud.

Tap on Settings then iCloud on iPhone

Step #2. Tap on your Apple ID.

Tap on Apple ID in iCloud Settings on iPhone

Step #3. Tap on Password & Security.

Tap on Password & Security in iCloud Settings on iPhone

Step #4. Tap on Turn on Two-Factor Authentication.

Tap on Set Up Two-Factor Authentication in iCloud on iPhone

Step #5. Tap on Continue and follow on-screen instructions.

Turn On Two-Factor Verification for Apple ID on iPhone and iPad

How to Turn On Two-Factor Authentication for Apple ID on Mac

Step #1. On your, Mac click on the Apple menu → System Preferences.

Click on System Preferences in Mac OS X El Capitan

Step #2. Click on iCloud.

Click on iCloud in Mac System Preferences

Step #3. Click on Account Details.

Click on Account Details in iCloud on Mac

Step #4. Up next click on Security Finally, you have to click Turn on Two-factor Authentication.

Click on Set Up Two-Factor Authentication in iCloud on Mac

Step #5. Click on Set Up.

Click on Set Up in iCloud on Mac

Step #6. Answer your security questions and follow on-screen instructions.

Answer Security Questions in iCloud on Mac

Step #7. Enter your Mobile number and click on continue.

Enter Your Mobile Number in iCloud for Two Factor Verification

Step #8. Click on Done.

Set Up Two Step Verification for Apple ID on Mac

If ever wanted to disable it, follow the above-explained steps and turn it off in the end. Considering its huge significance, I recommend keeping it enabled with a view to protecting your account from falling prey to hackers.

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What's your take on Two-Factor authentication? Do share your thoughts with us in the comment, on Facebook, Twitter, and Google Plus.

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Dhvanesh Adhiya is our editor-in-chief and reviewer who takes care of iGeeksBlog.com. He is passionate for wonderful apps that change the way your iPhone interacts in your life.