Apple’s two-factor authentication system sets up a chain of trust from one device to another. By ensuring your identity on one device, that device can then authenticate you on another device, and provide you with enhanced features, such as an Apple Watch unlocking a Mac, or an iPhone authorizing Apple Pay on a Mac. Understanding this chain of trust helps you better understand how Apple protects you.
Check out the latest episode of The Intego Mac Podcast, which I co-host with Josh Long. We talk about Macs and iOS devices, and how to keep them secure.