====== Two-factor strong authentication: howto ======

===== What is two-factor authentication? =====

It is a method of confirming a user's claimed identity by utilizing a combination of two different factors: 1) something they know (e.g. their password), 2) something they have (e.g. a one-time password, a card, a token), or 3) something they are (e.g. biometrics).

A good example of two-factor authentication is the withdrawing of money from a ATM; only the correct combination of a bank card (something that the user possesses) and a PIN (personal identification number, something that the user knows) allows the transaction to be carried out.

===== Why should I use two-factor on my zebrix account? =====

Your password is the only gatekeeper of your zebrix account. Imagine if your password is accidentally known by a malicious person...

===== zebrix implementation =====