1. Log in to our official site at https://www.tdex.com
2. Click 'Account' button on the top right corner of the homepage
3. Choose one between 'Cellphone Verification' and 'Google Authenticator'
4. Click 'Add' and fill in your information as instructed
*For Google authentication guide, please refer to https://support.tdex.com/hc/en-us/articles/115003833992