Two-factor authentication (also known as 2FA) lets people identify themselves more securely by adding a second layer of security. This isn’t a new invention, you probably do it all the time when you use your credit card and your PIN to get cash from the ATM at the corner.
On the web, two-factor authentication is mostly provided by smartphones. The user types in their password but needs a second device which has been registered previously to unlock their account.
This Two-Factor-Authentication on Joker means, that you will not only need your username and password, but also an additional, individual and constantly changing code, which is provided by an independent device such as your smart phone.
These two factors – the password, you know, and the smart phone, you have – add an additional layer of security against theft of credentials or dictionary attacks.
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