Glossary · Security and privacy
Two-factor authentication (2FA)
Two-factor authentication (2FA) asks for a second proof, such as a code from an app or a text message, in addition to your password when you sign in.
What it means for you
Turn it on for your camera, router and smart home accounts. It makes it much harder for someone to take over an account even if your password leaks.
Guides on this topic
- How to Secure Your Security Camera
Seven steps from two-factor sign-in and updates to IoT networks and safe sharing.
- Home Network Health Check (interactive tool)
Answer 25 straightforward questions for a 0 to 100 network score, a score for each area, your top 3 fixes and a weekend plan, free fixes first.
Related terms
← All glossary terms · Search all guides for “Two-factor authentication”
Definitions are short and general. For model-specific details, check your device maker’s own documentation.