Two factor authentication in iOS 10 proves the ultimate security concern of Apple towards its users. This is indeed the most secure way to keep your Apple ID secure because a person even if is aware of your password still can’t open your ID because in order to do so, two factor authentication is necessary in which you have to enter your one time code that anyone of your trusted devices generates. One time code is needed to be entered when you try to make a purchase or sign in to your Apple ID, iCloud, iCloud.com, iMessage, FaceTime or Game Center account on any new Apple device.
Two factor authentication Apple iOS 10
Two Factor Authentication is also required for Auto Unlock feature by which a person can unlock Mac book by wearing an Apple Watch.
Before the introduction of two factor authentication, we had to deal with two-step verification process which was less secure than two factor authentication. So after replacing the former one with the latter, you will need to follow the two factor authentication every time you:
1. Sign in to your Apple ID account over the internet
2. Sign in to your iCloud on a new Apple / Mac device
3. Sing in at iCloud.com in any web browser
4. Sign in to iMessage, Game Center or FaceTime on a new device
5. Make an iTunes, iBooks or App Store purchase from a new device
6. Get Apple ID related support from Apple.
Only those Apple users can opt for two factor authentication method who owns either one of these Apple devices.
1. iPhone, iPad or iPod touch with iOS 9 or later
2. Mac with OS X El Capitan or later and iTunes 12.3 or newer
3. Apple Watch with watchOS 2 and up
4. Windows PC with iCloud for Windows v5.0 or later and iTunes 12.3.3 and up
If you will try to run the two factor authentication on any device which does not meet this requirement, you might be prompted that Two-Factor Authentication is not available on any of your gadgets because they need to be upgraded to the latest software version. Also if you have two factor verification enabled on your ID, you will need to disable it so that two factor authentication can be enabled. To do so, go to your desktop web browser and:
1) Sign in to your Apple ID account. .
2) Click Edit under the Security option.
3) Click Turn Off Two-Step Verification, then set three new security questions and verify your date of birth and phone number when asked to do so.
Follow these steps to turn on two factor authentication now:
1. System Preferences → iCloud → Account Details → Security on your Mac. Or open Settings → iCloud → your Apple ID → Password & Security on your iPhone, iPad or iPod touch.
2. Click Set Up Two-Factor Authentication and follow the instructions provided onscreen.
If you want to enable Two-Factor Authentication on the web:
1. log into the Apple ID account page,
2. click Edit under the Security heading,
3. Click on the link “Get Started” below the Two-Step Verification option and follow the instructions provided on screen.