Two factor authentication is an optional but highly recommended security feature, which adds an extra layer of protection to your Joker.com account.
Once enabled, you will need a six-digit security code in addition to your password, whenever you log in to Joker.com.
To generate these security codes, you will need a device for this. One of the most common and practical options for this purpose is using a mobile app for your smartphone. Those are usually free of charge, but any device or app which are capable of talking the TOTP protocol should work as well. Here is an (incomplete) list of some apps:

• Google Authenticator (Android, iOS, Blackberry)
• Microsoft Authenticator (Android, iOS)
• Amazon AWS Virtual MFA (Android)
• Authentikator (Chrome Browser ^*)

During the short procedure to enable two-factor-authentication, you will receive a special 16-digit recovery code.
It is very important that you write this key down and store it somewhere safe.
If you ever lose your phone, or can't receive or generate a security code, you will need this recovery code for emergency access to Joker.com.

^{* Please note, that for security reasons it is not recommended to use the same device for Joker.com login and 2fa code generation.}