Book Companion · Chapter 4

Multi-Factor Authentication and Passkeys

Turning on a second layer, and moving toward passkeys, with click-by-click walkthroughs.

Resources for this chapter

← Chapter 3 All chapters Chapter 5 →

These are the current, maintained resources for this chapter. Links and recommendations here are kept up to date so the printed book can stay evergreen.

Get the plain-English security newsletter

One short email when we publish something useful. No spam, no fearmongering. Unsubscribe anytime.