HostDNS supports secure logins with two factor authentication tokens. Just go to Settings-> Account and press the button "Enable two-factor authentication (2FA)".
Then you can scan the QR-code with an OTP application such as Google Authenticator or Authy.
You must also enter the code shown after the scan on the bottom of the page, six digits.
Our implementation is using TOTP, Time-based One Time Passcodes. More information can be found in RFC6238.
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