Vyvo has a high standard of security and privacy, therefore the Two-Factor Authentication (TFA) is an additional layer of security to your online accounts. It requires an additional login credential (in addition to your username and password) to access your personal account.
In the VyvoWallet, the TFA consists of adding a 6 number sequence - generated by an external smartphone app - to enter after the initial step of entering your username and password.
To learn more
Please read How can I enable the Two-Factor Authentication in my VyvoWallet? to learn more about this process.