Apple's latest security-focused operating system updates add support for hardware-based account management. People with two-factor authentication can now request nearby hardware when signing in to an Apple ID account in iOS 16.3, iPadOS 16.3, and macOS Ventura 13.2. This option is also available with apps like https://apps.apple.com/us/app/call-recorder-icall/id1447098963 and others.
"This feature is intended for users who often face threats to their online accounts because of their public profile, such as celebrities, journalists, and government officials," Apple said when it announced (Opens in a new window) Security Keys in December.
Apple sees the use of physical keys as a logical progression from two-factor authentication, which it first introduced on Apple devices in 2015. More than 95% of iCloud accounts now use it.
"This takes our two-factor authentication even further and prevents even advanced attackers from obtaining a user's second factor in a phishing scam," Apple said. Using external hardware instead of other software-based controls can prevent attackers from capturing or requesting information during an authentication attempt.
So what exactly is a physical security key and how do you get one? Apple defines (opens in new window) as "a small peripheral that looks like a memory stick or tag." There are two main ways users can provide a device key during a login attempt. The first is to connect it to an Apple device such as an iPhone or a laptop via a USB-C, Lightning, or USB-A port.
Another option is to use an unallocated device that is recognized by the Apple device. This is called an NFC key or near-field communication. During the login attempt, the phone displays a screen asking users to "set up and activate one of your security keys. If you have an NFC key, bring it to the top of this iPhone."
After you receive your device, you can set it up to pair with your iPhone or computer using the settings menu. On your iPhone, go to Settings > [your name] > Passcode & Security > Add Security Keys. Then follow the on-screen instructions to add keys.
The function needs to know some restrictions. First, you can't use physical keys to sign in to iCloud for Windows or older devices that aren't receiving the iOS 16.3 update. Child accounts and Managed Apple IDs are also not supported, and Apple Watches are not linked to a family member's iPhone. To use security keys, the watch must be set up on your iPhone.
Another upcoming security feature, on the other hand, targets attackers who want to eavesdrop on iMessage conversations. When sending messages, iMessage Password Verification notifies someone with an on-screen warning if the sender is not who they think they are.
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