Universal 2nd Factor (U2F)
Open authentication standard that adds a second factor using hardware tokens for stronger security.
Frequently Asked Questions
What is Universal 2nd Factor (U2F)?
U2F is an open authentication standard by the FIDO Alliance that uses hardware tokens (USB/NFC) to provide phishing-resistant two-factor authentication.
How does U2F prevent phishing attacks?
U2F uses origin-bound cryptographic challenge-response, ensuring tokens only authenticate legitimate websites and thwarting phishing attempts.
Can one U2F device be used with multiple services?
Yes, U2F tokens generate unique key pairs per service, allowing secure, cross-platform authentication with a single physical device.