Warning! If you’re running versions of macOS, iOS, watchOS, tvOS, or iTunes for Windows, you may have trouble using 2FA. In Apple’s implementation, when you enable two-factor authentication, you keep your existing password on your Apple ID, and add at least one phone number that can receive SMS (text) messages or voice calls, and one or more trusted iOS devices or Macs. Usually there’s an emergency backup, too: a one-time-use code or set of codes that can be used in a pinch, or a process to prove your identity. Requiring two factors of different sorts makes it more likely that you are the legitimate owner of an account or have authorized access for a service.Ī two-factor system generally employs something you know, such as a memorized password, coupled with something you have or possess physically - such as a phone, a smartcard, or other hardware - or something you are, like a fingerprint or personal characteristic. A factor is a bit of proof that you are who you say you are. The way around this is to use what Apple calls two-factor authentication (2FA). However, without making an extra effort, an Apple ID is protected only by the password you set, and can be reset and potentially hijacked in a number of ways should someone gain access to your email or know your security questions for resetting a password. Dancing a Two-StepĪpple lets you tie in an Apple ID for several purposes in iOS: for iCloud synchronization, iCloud Drive, App Store purchases, iMessage, and more. In this chapter, you learn how to set up two-factor authentication, how to secure your extra pieces against discovery or loss, and how to reset an account. You can also download an excerpt, which includes the table of contents.Īpple’s two-factor authentication for Apple ID lets you secure access to your accounts with a password plus something extra that you have under your control. This is an excerpted chapter from the book “A Practical Guide to Networking, Privacy, and Security in iOS 11.” You can find out more about the title and purchase a DRM-free ebook in all popular formats at the Practical Guides web site.
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